Question: Which location has this animal invaded?

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Cane toad. The cane toad (Rhinella marina), also known as the giant neotropical toad or marine toad, is a large, terrestrial true toad native to South and mainland Central America, but which has been introduced to various islands throughout Oceania and the Caribbean, as well as Northern Australia. It is a member of the genus "Rhinella", which includes many true toad species found throughout Central and South America, but it was formerly assigned to the genus "Bufo".The cane toad is an old species. A fossil toad (specimen UCMP 41159) from the La Venta fauna of the late Miocene in Colombia is indistinguishable.

Cane toad. from modern cane toads from northern South America. It was discovered in a floodplain deposit, which suggests the "R. marina" habitat preferences have long been for open areas. The cane toad is a prolific breeder; females lay single-clump spawns with thousands of eggs. Its reproductive success is partly because of opportunistic feeding: it has a diet, unusual among anurans, of both dead and living matter. Adults average 10 – 15 (cm) in length; the largest recorded specimen had a snout-vent length of 24 (cm).The cane toad has poison glands, and the tadpoles are highly toxic to most animals if ingested.

Cane toad. Its toxic skin can kill many animals, both wild and domesticated, and cane toads are particularly dangerous to dogs. Because of its voracious appetite, the cane toad has been introduced to many regions of the Pacific and the Caribbean islands as a method of agricultural pest control. The common name of the species is derived from its use against the cane beetle ("Dermolepida albohirtum"), which damages sugar cane. The cane toad is now considered a pest and an invasive species in many of its introduced regions. The 1988 film "" documented the trials and tribulations of the introduction of cane.

Cane toad. toads in Australia.## Taxonomy.Historically, the cane toads were used to eradicate pests from sugarcane, giving rise to their common name. The cane toad has many other common names, including "giant toad" and "marine toad"; the former refers to its size, and the latter to the binomial name, "R. marina". It was one of many species described by Carl Linnaeus in his 18th-century work "Systema Naturae" (1758). Linnaeus based the specific epithet "marina" on an illustration by Dutch zoologist Albertus Seba, who mistakenly believed the cane toad to inhabit both terrestrial and marine environments. Other common names include "giant neotropical toad",.

Cane toad. "Dominican toad", "giant marine toad", and "South American cane toad". In Trinidadian English, they are commonly called "crapaud", the French word for toad.The genus "Rhinella" is considered to constitute a distinct genus of its own, thus changing the scientific name of the cane toad. In this case, the specific name "marinus" (masculine) changes to "marina" (feminine) to conform with the rules of gender agreement as set out by the International Code of Zoological Nomenclature, changing the binomial name from "Bufo marinus" to "Rhinella marina"; the binomial "Rhinella marinus" was subsequently introduced as a synonym through misspelling by Pramuk, Robertson, Sites,.

Cane toad. and Noonan (2008). Though controversial (with many traditional herpetologists still using "Bufo marinus") the binomial "Rhinella marina" is gaining in acceptance with such bodies as the IUCN, Encyclopaedia of Life, Amphibian Species of the World and increasing numbers of scientific publications adopting its usage.Since 2016, cane toad populations native to Mesoamerica and northwestern South America are sometimes considered to be a separate species, "Rhinella horribilis".In Australia, the adults may be confused with large native frogs from the genera "Limnodynastes", "Cyclorana", and "Mixophyes". These species can be distinguished from the cane toad by the absence of large parotoid glands behind their.

Cane toad. eyes and the lack of a ridge between the nostril and the eye. Cane toads have been confused with the giant burrowing frog ("Heleioporus australiacus"), because both are large and warty in appearance; however, the latter can be readily distinguished from the former by its vertical pupils and its silver-grey (as opposed to gold) irises. Juvenile cane toads may be confused with species of the genus "Uperoleia", but their adult colleagues can be distinguished by the lack of bright colouring on the groin and thighs.In the United States, the cane toad closely resembles many bufonid species. In particular, it could.

Cane toad. be confused with the southern toad ("Bufo terrestris"), which can be distinguished by the presence of two bulbs in front of the parotoid glands.## Genetics.The cane toad genome has been sequenced and certain Australian academics believe this will help in understanding how the toad can quickly evolve to adapt to new environments, the workings of its infamous toxin, and hopefully provide new options for halting this species' march across Australia and other places it has spread as an invasive pest.## Description.Considered the largest species in the Bufonidae, the cane toad is very large; the females are significantly longer than males,.

Cane toad. toads lose the toxicity that protected them as eggs and tadpoles, but have yet to fully develop the parotoid glands that produce bufotoxin. Only an estimated 0.5% of cane toads reach adulthood, in part because they lack this key defense - but also due to tadpole cannibalism. Although cannibalism does occur in the native population in South America, the rapid evolution occurring in the unnaturally large population in Australia has produced tadpoles 30x more likely to be "interested" in cannibalising their siblings, and 2.6x more likely to actually "do so". They have also evolved to shorten their tadpole phase in.

Cane toad. consumption of cane toads. Dogs are especially prone to be poisoned by licking or biting toads. Pets showing excessive drooling, extremely red gums, head-shaking, crying, loss of coordination, and/or convulsions require immediate veterinary attention.Bufotenin, one of the chemicals excreted by the cane toad, is classified as a schedule 9 drug under Australian law, alongside heroin and LSD. The effects of bufotenin are thought to be similar to those of mild poisoning; the stimulation, which includes mild hallucinations, lasts less than an hour. As the cane toad excretes bufotenin in small amounts, and other toxins in relatively large quantities, toad licking.

Cane toad. could result in serious illness or death.In addition to releasing toxin, the cane toad is capable of inflating its lungs, puffing up, and lifting its body off the ground to appear taller and larger to a potential predator.Since 2011, experimenters in the Kimberley region of Western Australia have used poisonous sausages containing toad meat in an attempt to protect native animals from cane toads' deadly impact. The Western Australian Department of Environment and Conservation, along with the University of Sydney, developed these sausage-shaped baits as a tool in order to train native animals not to eat the toads. By blending.

Cane toad. bits of toad with a nausea-inducing chemical, the baits train the animals to stay away from the amphibians.## Predators.Many species prey on the cane toad and its tadpoles in its native habitat, including the broad-snouted caiman ("Caiman latirostris"), the banded cat-eyed snake ("Leptodeira annulata"), eels (family Anguillidae), various species of killifish, the rock flagtail ("Kuhlia rupestris"), some species of catfish (order Siluriformes), some species of ibis (subfamily Threskiornithinae), and "Paraponera clavata" (bullet ants).Predators outside the cane toad's native range include the whistling kite ("Haliastur sphenurus"), the rakali ("Hydromys chrysogaster"), the black rat ("Rattus rattus") and the water monitor ("Varanus salvator").

Cane toad. The tawny frogmouth ("Podargus strigoides") and the Papuan frogmouth ("Podargus papuensis") have been reported as feeding on cane toads; some Australian crows ("Corvus" spp.) have also learned strategies allowing them to feed on cane toads, such as using their beak to flip toads onto their backs.Opossums of the genus "Didelphis" likely can eat cane toads with impunity. Meat ants are unaffected by the cane toads' toxins, so are able to kill them. The cane toad's normal response to attack is to stand still and let its toxin kill the attacker, which allows the ants to attack and eat the toad.

Cane toad. to 2% of the density in Australia.## As an introduced species.The cane toad has been introduced to many regions of the world—particularly the Pacific—for the biological control of agricultural pests. These introductions have generally been well documented, and the cane toad may be one of the most studied of any introduced species.Before the early 1840s, the cane toad had been introduced into Martinique and Barbados, from French Guiana and Guyana. An introduction to Jamaica was made in 1844 in an attempt to reduce the rat population. Despite its failure to control the rodents, the cane toad was introduced to Puerto.

Cane toad. Rico in the early 20th century in the hope that it would counter a beetle infestation ravaging the sugarcane plantations. The Puerto Rican scheme was successful and halted the economic damage caused by the beetles, prompting scientists in the 1930s to promote it as an ideal solution to agricultural pests.As a result, many countries in the Pacific region emulated the lead of Puerto Rico and introduced the toad in the 1930s. Introduced populations are in Australia, Florida, Papua New Guinea, the Philippines, the Ogasawara, Ishigaki Island and the Daitō Islands of Japan, most Caribbean islands, Fiji and many other Pacific.

Cane toad. islands, including Hawaii. Since then, the cane toad has become a pest in many host countries, and poses a serious threat to native animals.## Australia.Following the apparent success of the cane toad in eating the beetles threatening the sugarcane plantations of Puerto Rico, and the fruitful introductions into Hawaii and the Philippines, a strong push was made for the cane toad to be released in Australia to negate the pests ravaging the Queensland cane fields. As a result, 102 toads were collected from Hawaii and brought to Australia. Queensland's sugar scientists released the toad into cane fields in August 1935.

Cane toad. After this initial release, the Commonwealth Department of Health decided to ban future introductions until a study was conducted into the feeding habits of the toad. The study was completed in 1936 and the ban lifted, when large-scale releases were undertaken; by March 1937, 62,000 toadlets had been released into the wild. The toads became firmly established in Queensland, increasing exponentially in number and extending their range into the Northern Territory and New South Wales. In 2010, one was found on the far western coast in Broome, Western Australia.However, the toad was generally unsuccessful in reducing the targeted grey-backed cane.

Cane toad. beetles ("Dermolepida albohirtum"), in part because the cane fields provided insufficient shelter for the predators during the day, and in part because the beetles live at the tops of sugar cane—and cane toads are not good climbers. Since its original introduction, the cane toad has had a particularly marked effect on Australian biodiversity. The population of a number of native predatory reptiles has declined, such as the varanid lizards "Varanus mertensi", "V. mitchelli", and "V. panoptes", the land snakes "Pseudechis australis" and "Acanthophis antarcticus", and the crocodile species "Crocodylus johnstoni"; in contrast, the population of the agamid lizard "Amphibolurus gilberti"—known.

Cane toad. the toads became abundant, they have done even less to control the pests than in Australia. The toad was introduced to Martinique from French Guiana before 1944 and became established. Today, they reduce the mosquito and mole cricket populations. A third introduction to the region occurred in 1884, when toads appeared in Jamaica, reportedly imported from Barbados to help control the rodent population. While they had no significant effect on the rats, they nevertheless became well established. Other introductions include the release on Antigua—possibly before 1916, although this initial population may have died out by 1934 and been reintroduced at.

Cane toad. islands in Fiji, although they tend to be smaller than their counterparts in other regions.## New Guinea.The cane toad was introduced into New Guinea to control the hawk moth larvae eating sweet potato crops. The first release occurred in 1937 using toads imported from Hawaii, with a second release the same year using specimens from the Australian mainland. Evidence suggests a third release in 1938, consisting of toads being used for human pregnancy tests—many species of toad were found to be effective for this task, and were employed for about 20 years after the discovery was announced in 1948. Initial.

Cane toad. reports argued the toads were effective in reducing the levels of cutworms and sweet potato yields were thought to be improving. As a result, these first releases were followed by further distributions across much of the region, although their effectiveness on other crops, such as cabbages, has been questioned; when the toads were released at Wau, the cabbages provided insufficient shelter and the toads rapidly left the immediate area for the superior shelter offered by the forest. A similar situation had previously arisen in the Australian cane fields, but this experience was either unknown or ignored in New Guinea. The.

Cane toad. As a laboratory animal, the cane toad has numerous advantages: they are plentiful, and easy and inexpensive to maintain and handle. The use of the cane toad in experiments started in the 1950s, and by the end of the 1960s, large numbers were being collected and exported to high schools and universities. Since then, a number of Australian states have introduced or tightened importation regulations.There are several commercial uses for dead cane toads. Cane toad skin is made into leather and novelty items. Stuffed cane toads, posed and accessorised, are merchandised at souvenir shops for tourists. Attempts have been made.

Cane toad. to produce fertiliser from toad carcasses.## Invasive species.Cane toads pose a serious threat to native species when introduced to a new ecosystem. Classified as an invasive species in over 20 countries, multiple reports exist of the cane toad moving into a new area to be followed by a decline in the biodiversity in that region. The most documented region of the cane toad's invasion and subsequent effect on native species is Australia, where multiple surveys and observations of the toad's conquest have been completed. The best way to illustrate this effect is through the plight of the northern quoll, as.

Cane toad. the quoll population began at the Mary River ranger station using radio tracking in 2002, months before the first cane toads arrived at the site. After the arrival of the cane toads, the population of northern quolls in the Mary River site plummeted between October and December 2002, and by March 2003, the northern quoll appeared to be extinct in this section of the park, as no northern quolls were caught in the trapping trips in the following two months. In contrast, the population of northern quolls in the control site at the East Alligator ranger station remained relatively constant,.

Cane toad. not showing any symptoms of declining. The evidence from the Kakadu National Park is compelling not only because of the timing of the population of northern quolls plummeting just months after the arrival of the cane toad, but also because in the Mary River region 31% of mortalities within the quoll population were attributed to lethal toxic ingestion, as no signs of disease, parasite infestation, or any other obvious changes at the site were found that could have caused such a rapid decline. The most obvious evidence that supports the hypothesis that the invasion of the cane toads caused the.


Question: How many elevators does this have?

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30 St Mary Axe. accepted.## Planning process.John Prescott, the Deputy Prime Minister, granted planning permission on 23 August 2000 to construct a building on the site, which would be much larger than the old Exchange. The site needed development, was not on any of the "sight lines" (planning guidance requires that new buildings do not obstruct or detract from the view of St Paul's Cathedral dome when viewed from a number of locations around London), and had housed the Baltic Exchange.The plan for the site was to reconstruct the Baltic Exchange. GMW Architects proposed a new rectangular building surrounding a restored exchange: it would.


Question: What is the closest upper taxonomy of this animal?

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Arctic hare. The Arctic hare ("Lepus arcticus") is a species of hare highly adapted to living in the Arctic tundra and other icy biomes. The Arctic hare survives with shortened ears and limbs, a small nose, fat that makes up close to 20% of its body, and a thick coat of fur. It usually digs holes in the ground or under the snow to keep warm and to sleep. Arctic hares look like rabbits but have shorter ears, are taller when standing, and, unlike rabbits, can thrive in extreme cold. They can travel together with many other hares, sometimes huddling with dozens.

Arctic hare. "Euhoplopsyllus glacialis", and "Megabothris groenlandicus". Fleas are more common than parasitic worms.## Subspecies.There are four subspecies of this hare:"Lepus arcticus arcticus""Lepus arcticus banksii""Lepus arcticus groenlandicus""Lepus arcticus monstrabilis.


Question: Who is the creator of this building?

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Monument to the Great Fire of London. west side of the base displays a sculpture, by Caius Gabriel Cibber, in alto and bas relief, of the destruction of the City; with Charles II and his brother, James, the Duke of York (later King James II), surrounded by liberty, architecture, and science, giving directions for its restoration.It gives its name to the nearby London Underground station, Monument.## History.The first Rebuilding Act, passed in 1669, stipulated that "the better to preserve the memory of this dreadful visitation", a column of either brass or stone should be set up on Fish Street Hill, on or near the site of Farynor's.


Question: Who is the architect of this building?

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Palau Nacional. The (Catalan for ‘National Palace’) is a building on the hill of Montjuïc in Barcelona. It was the main site of the 1929 International Exhibition. It was designed by Eugenio Cendoya and Enric Catà under the supervision of Pere Domènech i Roura. Since 1934 it has been home to the National Art Museum of Catalonia.With a ground surface of 32,000 m2, the Spanish Renaissance-inspired building has a rectangular floor plan flanked by two side and one rear square sections, with an elliptical dome in the centre. The fountains by the staircases leading to the palace are the work of Carles.

Palau Nacional. Barcelona, Darius Rumeu i Freixa. The winning project also included the collaboration of the constructor Antoni Montseny, and in some publications, the name Pere Domènech i Roura appears, who was already the general manager of construction of the Exhibition.## Executive project.During 1925 the competition, winners made the implementation plan of their project. One of the most important factors was the guarantee of development of the work in a given timeframe. A mechanism to bring the construction time forward was found in the rationalization of architectonic elements; searching for repetition that would serve to save time during the building process. Three.

Palau Nacional. authorities including the president of the executive committee of the Exhibition, Mariano de Foronda, the mayor of Barcelona Darius Rumeu i Freixa, and the director of construction Pere Domènech i Roura.## Architecture.The design of the National Palace is a unified style of Spanish Renaissance architecture with an air of academic classicism.It is the result of different functional forms and construction procedures, resolved by a technical language attributed to the .The construction of the Palace consists of the combination of traditional systems based on symmetry, as clearly outlined in its composition and, that of the building procedure dominated by more modern.

Palau Nacional. II and the Duchess of AlbaQuevedo on the Steps of San FelipeCharles IIIInauguration of the first Barcelona-Mataró railway## Restoration.Architects Eugenio Cendoya, Enric Catà and Pere Domènech i Roura constructed Palau Nacional as a temporary building for the Exhibition of 1929. The speed of the construction and the modesty of the materials used meant that a restoration of the structure was called for in 1934, when it became the National Art Museum of Catalonia. It was the ground floor rooms which underwent the most important transformation. The architect Ramon Reventós was appointed in charge of the renovation, in which they removed.


Question: How wide is the island in the image? answer in metre.

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Confederation Bridge. ship traffic. The bridge rests on 62 piers, of which the 44 main piers are 250 (m) apart. The bridge is 11 (m) wide.The speed limit on the bridge is 80 (km/h) but can vary with wind and weather conditions. When travelling at the speed limit, it takes about 12 minutes to cross the bridge.## Tolls.Tolls apply only when leaving Prince Edward Island (when travelling westbound). The toll rates are $50.25 for a two-axle automobile and $8.50 for each additional axle. Motorcycles are charged $20.00. While pedestrians and cyclists are not permitted to cross the bridge, a shuttle service is.


Question: Where do you usually find this plant?

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Caltha palustris. Caltha palustris, known as marsh-marigold and kingcup, is a small to medium size perennial herbaceous plant of the buttercup family, native to marshes, fens, ditches and wet woodland in temperate regions of the Northern Hemisphere. It flowers between April and August, dependent on altitude and latitude, but occasional flowers may occur at other times.## Description."Caltha palustris" is a 10 – 80 (cm) high, hairless, fleshy, perennial, herbaceous plant that dies down in autumn and overwinters with buds near the surface of the marshy soil. The plants have many, 2 – 3 (mm) thick strongly branching roots. Its flowering stems are.

Caltha palustris. hollow, erect or more or less decumbent. The alternate true leaves are in a rosette, each of which consist of a leaf stem that is about four times as long as the kidney-shaped leaf blade, itself between 3 – 25 (cm) long and 3 – 20 (cm) wide, with a heart-shaped foot, a blunt tip, and a scalloped to toothed, sometime almost entire margin particularly towards the tip. In their youth the leaves are protected by a membranous sheath, that may be up to 3 (cm) long in fully grown plants.## Inflorescence.The common marsh-marigold mostly has several flowering stems of.

Caltha palustris. correct name.## Etymology.The generic name "Caltha" is derived from the Ancient Greek (), meaning "goblet", and is said to refer to the shape of the flower. The species epithet "palustris" is Latin for "of the marsh" and indicates its common habitat.In the UK, "Caltha palustris" is known by a variety of vernacular names, varying by geographical region. These include in addition to the most common two, marsh marigold and kingcup, also brave bassinets, crazy Beth, horse blob, Molly-blob, May blob, mare blob, boots, water boots, meadow-bright, bullflower, meadow buttercup, water buttercup, soldier's buttons, meadow cowslip, water cowslip, publican's cloak, crowfoot,.

Caltha palustris. Garden Merit), "Multiplex", "Plena", "Semiplena".## Distribution and habitat.The species is native to marshes, fens, ditches and wet woodland in temperate regions of the Northern Hemisphere. It can be found in much of the northeastern United States.## Ecology.The marsh-marigold grows in places with oxygen-rich water near the surface of the soil. It likes richer soils, but dislikes application of fertilizer and avoids high concentrations of phosphate and ammonium, and is also shy of brackish water. It is often associated with seepage that is rich in iron, because iron ions react with phosphate, thus making it unavailable for plants. The resulting insoluble.

Caltha palustris. mineral appears as "rusty" flocs on the water soil and the surface of the stems of marsh plants. Around the edge of lakes and rivers it grows between reeds, and it can be found in black alder coppices and other regularly flooded and always moist forests. When it is present it often visually dominates when it is in bloom. It also used to be common on wet meadows, but due to agricultural rationalization it is now limited to ditches.It is a component of purple moor grass and rush pastures – a type of Biodiversity Action Plan habitat in the UK.

Caltha palustris. It occurs on poorly drained neutral and acidic soils of the lowlands and upland fringe.In western Europe, the marsh-marigold moth "Micropterix calthella" bites open the anthers of the marsh-marigold and other plants to eat the pollen. The caterpillars that are present in summer and autumn also feed on marsh-marigold, although these are sometimes found on mosses too. Another visitor of "Caltha palustris" in western Europe is the leaf beetle "Prasocuris phellandrii", which is black with four orange stripes and around ½ cm and eats the sepals. Its larvae inhabit the hollow stems of members of the parsley family. In the.

Caltha palustris. have some spongy tissue that makes them float on water, until they wash up in a location that may be suitable for this species to grow.## Diseases.The marsh-marigold is affected by the rust species "Puccinia calthea" and "P. calthicola".## Toxicity."Caltha" contains several active substances of which the most important from a toxicological point of view is protoanemonin. Larger quantities of the plant may cause convulsions, burning of the throat, vomiting, bloody diarrhea, dizziness and fainting. Contact of the skin or mucous membranes with the juices can cause blistering or inflammation, and gastric illness if ingested. Younger parts seem to contain.

Caltha palustris. and used as a spice.The common marsh marigold is planted as an ornamental throughout temperate regions in the world, and sometimes recommended for low maintenance wildlife gardens. The double-flowered cultivar 'Flore Pleno' has won the Royal Horticultural Society's Award of Garden Merit.## Culture."Caltha palustris" is a plant commonly mentioned in literature, including Shakespeare:"Winking Marybuds begin""To open their golden eyes" ("Cymbeline", ii. 3).It also appears in Charlotte Brontë's "Shirley":"They both halted on the green brow of the Common: they looked down on the deep valley robed in May raiment; on varied meads, some pearled with daisies, and some golden with king-cups:.


Question: What is the minimum frequency of sound that you can hear of this fish?

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Goldfish. in size, body shape, fin configuration, and coloration (various combinations of white, yellow, orange, red, brown, and black are known).## History.Various species of carp (collectively known as Asian carp) have been bred and reared as food fish for thousands of years in East Asia. Some of these normally gray or silver species have a tendency to produce red, orange or yellow color mutations; this was first recorded in imperial China, during the Jin dynasty (266–420).During the Tang dynasty (AD 618–907), it was popular to raise carp in ornamental ponds and water gardens. A natural genetic mutation produced gold (actually yellowish.

Goldfish. being the imperial color. The occurrence of other colors (apart from red and gold) was first recorded in 1276.During the Ming dynasty (1368–1644), goldfish also began to be raised indoors, which permitted selection for mutations that would not be able to survive in ponds. The first occurrence of fancy-tailed goldfish was recorded in the Ming Dynasty. In 1603, goldfish were introduced to Japan. In 1611, goldfish were introduced to Portugal and from there to other parts of Europe.During the 1620s, goldfish were highly regarded in southern Europe because of their metallic scales, and symbolized good luck and fortune. It became.

Goldfish. some other "Carassius" species of carp. Koi and common carp may also interbreed with goldfish to produce sterile hybrids.## Size.When kept in small indoor aquariums, goldfish tend to stay about 1 (in) to 2 (in) long. Goldfish may grow larger if moved to bigger fish tanks, but they usually do not grow longer than 6 (in). In outdoor ponds, and in the wild, goldfish can grow to about 14 (in).As of April 2008, the largest goldfish in the world was believed by the BBC to measure 19 (in), in the Netherlands. At the time, a goldfish named "Goldie", kept as.

Goldfish. a pet in a tank in Folkestone, England, was measured as 15 (in) and over 2 (lb), and named as the second largest in the world behind the Netherlands fish. The secretary of the Federation of British Aquatic Societies (FBAS) stated of Goldie's size, "I would think there are probably a few bigger goldfish that people don't think of as record holders, perhaps in ornamental lakes". In July 2010, a goldfish measuring 16 (in) and 5 (lb) was caught in a pond in Poole, England, thought to have been abandoned there after outgrowing a tank. On November 16, 2020, a.

Goldfish. of waste both in their feces and through their gills, releasing harmful chemicals into the water. Build-up of this waste to toxic levels can occur in a relatively short period of time, and can easily cause a goldfish's death. For common and comet varieties, each goldfish should have about 20 (usgal) of water. Fancy goldfish (which are smaller) should have about 10 (usgal) per goldfish. The water surface area determines how much oxygen diffuses and dissolves into the water. A general rule is have 1 (sqft). Active aeration by way of a water pump, filter or fountain effectively increases the.

Goldfish. temperatures may help fight protozoan infestations by accelerating the parasite's life-cycle—thus eliminating it more quickly. The optimum temperature for goldfish is between 20 (C) and 22 (C).Like all fish, goldfish do not like to be petted. In fact, touching a goldfish can endanger its health, because it can cause the protective slime coat to be damaged or removed, exposing the fish's skin to infection from bacteria or water-born parasites. However, goldfish respond to people by surfacing at feeding time, and can be trained or acclimated to taking pellets or flakes from human fingers. The reputation of goldfish dying quickly is.

Goldfish. animals, goldfish preferences vary.## For mosquito control.Like some other popular aquarium fish, such as the guppy, goldfish and other carp are frequently added to stagnant bodies of water to reduce mosquito populations. They are used to prevent the spread of West Nile virus, which relies on mosquitoes to migrate. However, introducing goldfish has often had negative consequences for local ecosystems.## Market.The market for live goldfish and other crucian carp usually imported from China was $1.2 million in 2018. Some high quality varieties cost between $125 to $300.## Welfare concerns.Fishbowls are detrimental to the health of goldfish and are prohibited by.

Goldfish. require a substantial volume of well-filtered water to thrive. In addition, all goldfish varieties have the potential to reach 5 inches (12.7 cm) in total length, with single-tailed breeds often exceeding one foot (30.5 cm). Single-tailed varieties include common and comet goldfish.In many countries, carnival and fair operators commonly give goldfish away in plastic bags as prizes. In late 2005 Rome banned the use of goldfish and other animals as carnival prizes. Rome has also banned the use of "goldfish bowls", on animal cruelty grounds, as well as Monza, Italy, in 2004. In the United Kingdom, the government proposed banning.


Question: What is the closest upper taxonomy of this insect?

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West Coast lady. The West Coast lady ("Vanessa annabella") is one of three North American species of brush-footed butterflies known colloquially as the "painted ladies". "V. annabella" occurs throughout much of the western US and southwestern Canada. The other two species are the cosmopolitan "Vanessa cardui" (painted lady) and the eastern "Vanessa virginiensis" (American painted lady). This species has also been considered a subspecies of the South American "Vanessa carye" and is frequently misspelled as "anabella".## Distinguishing features.Aside from general differences in distribution, "V. annabella" can be distinguished from the other two painted ladies of North America as follows:Most conspicuously, it lacks obvious.

West Coast lady. usually two eyespots are larger and have more conspicuous blue centers. In "V. virginiensis", these normally are the spot at each end of the row, whereas in the present species it is the two middle ones."Cynthia" (butterfly)"Vanessa carye"West Coast Lady, Butterflies of Canada.


Question: What is the highest observed lifespan of this animal?

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Groundhog. "M. monax" to thrive.## Survival.In the wild, groundhogs can live up to six years with two or three being average. In captivity, groundhogs reportedly live up to 14 years. Human development, which often produces openings juxtaposed with second growth trees that are incidentally also favored by groundhogs, often ensures that groundhogs in well-developed areas are nearly free of predators, beyond humans (through various forms of pest control or roadkills) or mid-to-large sized dogs.Wild predators of adult groundhogs in most of eastern North America include coyotes, badgers, bobcats, and foxes (largely only red fox). Many of these predators are successful stealth.

Groundhog. twenty inches to three feet (20 - 36 (in)) below ground surface. It is about 16 (in) wide and 14 (in) high. There are typically two burrow openings or holes. One is the main entrance, the other a spy hole. Description of the length of the burrow often includes side galleries. Excluding side galleries, Schoonmaker reports the longest was 24 (ft), and the average length of eleven dens was 14 (ft). W. H. Fisher investigated nine burrows, finding the deepest point 49 (in) down. The longest, including side galleries, was . Numbers of burrows per individual groundhog decrease with urbanization.Bachman.


Question: What country does this object belong to?

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Seven Wonders of the Ancient World. The Seven Wonders of the Ancient World (also known as the Seven Wonders of the World or simply the Seven Wonders) is a list of seven notable structures present during classical antiquity. The first known list of seven wonders dates back to the 2nd–1st century BC.While the entries have varied over the centuries, the seven traditional wonders are the Great Pyramid of Giza, the Colossus of Rhodes, the Lighthouse of Alexandria, the Mausoleum at Halicarnassus, the Temple of Artemis, the Statue of Zeus at Olympia, and the Hanging Gardens of Babylon. Using modern-day countries, two of the wonders were located.

Seven Wonders of the Ancient World. in Greece, two in Turkey, two in Egypt, and one in Iraq. Of the seven wonders, only the Pyramid of Giza, which is also by far the oldest of the wonders, still remains standing, with the others being destroyed over the centuries. There is scholarly debate over the exact nature of the Hanging Gardens, and there is doubt as to whether they existed at all. ## Background.Alexander the Great's conquest of much of the western world in the 4th century BC gave Hellenistic travellers access to the civilizations of the Egyptians, Persians, and Babylonians. Impressed and captivated by the landmarks.

Seven Wonders of the Ancient World. including six of the present list (substituting the walls of Babylon for the Lighthouse of Alexandria):Another 2nd century BC writer, who, perhaps dubiously, identified himself as Philo of Byzantium, wrote a short account entitled "The Seven Sights of the World". The surviving manuscript is incomplete, missing its last pages. Still, from the preamble text, we can conclude that the list of seven sights exactly matches Antipater's (the preamble mentions the location of Halicarnassus, but the pages describing the seventh wonder, presumably the Mausoleum, are missing).Earlier and later lists by the historian Herodotus ( BC– BC) and the poet Callimachus of.

Seven Wonders of the Ancient World. with the exceptions being the Pyramids of Giza and the Hanging Gardens of Babylon.## Influence.## Arts and architecture.The seven wonders on Antipater's list won praises for their notable features, ranging from superlatives of the highest or largest of their types, to the artistry with which they were executed. Their architectural and artistic features were imitated throughout the Hellenistic world and beyond.The Greek influence in Roman culture, and the revival of Greco-Roman artistic styles during the Renaissance caught the imagination of European artists and travellers. Paintings and sculptures alluding to Antipater's list were made, while significant numbers of adventurers travelled to.


Question: What is the closest upper taxonomy of this bird?

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Great kiskadee. The great kiskadee ("Pitangus sulphuratus"), called bem-te-vi in Brazil and benteveo in Argentina, is a passerine bird in the tyrant flycatcher family Tyrannidae. It is the only member of the genus Pitangus.It breeds in open woodland with some tall trees, including cultivation and around human habitation. It is mainly found in Belize, and from the Lower Rio Grande Valley in southern Texas and northern Mexico. Occurs throughout Brazil and Venezuela (especially the central and south-southeastern regions) south to Argentina and Uruguay, Paraguay and central Argentina, the Guyana coastline, and on Trinidad. It was introduced to Bermuda in 1957, and to.

Great kiskadee. one time, the bird was also known as the Derby flycatcher.When the Swedish naturalist Carl Linnaeus updated his "Systema Naturae" for the twelfth edition in 1766 he added 240 species that had been previously described by Brisson in his "Ornithologie". One of these was the great kiskadee. Linnaeus included a terse description, coined the binomial name "Lanius sulphuratus" and cited Brisson's work. The specific name "sulphuratus" is Latin for 'sulphur'. The word had been used by Brisson in describing the yellow colour of the underparts of the bird.The great kiskadee is now the only species placed in the genus "Pitangus.

Great kiskadee. that was introduced by the English naturalist William Swainson in 1827. The lesser kiskadee was at one time also placed in "Pitangus" but in 1984 the American ornithologist Wesley Edwin Lanyon moved the lesser kiskadee to its own monotypic genus "Philohydor". This has been accepted by some ornithologists, but not all.There are 10 subspecies: "P. s. texanus" van Rossem, 1940 – south Texas to east Mexico "P. s. derbianus" (Kaup, 1852) – west Mexico "P. s. guatimalensis" (Lafresnaye, 1852) – southeast Mexico to central Panama "P. s. rufipennis" (Lafresnaye, 1851) – north Colombia and north Venezuela "P. s. caucensis" Chapman,.


Question: What has this building crossed over?

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Preobrazhensky Metro Bridge. Preobrazhenskiy Metro Bridge is the shortest (330 metres) of four rail bridges in Moscow, Russia. It is located in the Eastern Administrative Okrug of the city. It spans over Yauza River and is a part of the Sokolnicheskaya Line of Moscow Metro. It connects the stations Preobrazhenskaya Ploshchad and Sokolniki.Metro Bridge was opened on 31 December 1965 together with the Preobrazhenskaya Ploshchad metro station. Preobrazhenskiy Metro Bridge at metromost.com.


Question: What is the closest parent taxonomy of this insect?

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Hermetia illucens. Hermetia illucens, the black soldier fly, is a common and widespread fly of the family Stratiomyidae.## Distribution.This species is native to the Neotropical realm, but in recent decades has spread across all continents, becoming virtually cosmopolitan. It is present in most of the United States and Europe, including the Iberian Peninsula, southern France, Italy, Croatia, Malta, the Canary Islands, and Switzerland, on the Black Sea coast of Russia in the Krasnodar Territory. It can also be found in the Afrotropical realm, the Australasian realm, the east Palaearctic realm, the Nearctic realm, North Africa, Southern Africa, and the Indomalayan realm.## Description.The.

Hermetia illucens. adults of "H. illucens" measure about 16 (mm) long. These medium-sized flies have a predominantly black body, with metallic reflections ranging from blue to green on the thorax and sometimes with a reddish end of the abdomen. The second abdominal tergite has translucent areas, from which the specific Latin epithet derives. The head is wide, with very developed eyes. The antennae are about twice the length of the head. The legs are black with whitish tarsi. The wings are membranous; in the resting time, they are folded horizontally on the abdomen and overlapped."H. illucens" is a mimic fly, very close.

Hermetia illucens. in size, color, and appearance to the organ pipe mud dauber wasp and its relatives. The mimicry of this particular kind of wasp is especially enhanced in that the fly's antennae are elongated and wasp-like, the fly's hind tarsi are pale, as are the wasp's, and the fly has two small transparent "windows" in the basal abdominal segments that make the fly appear to have a narrow "wasp waist". Black soldier fly larvae can be differentiated from blowfly or housefly larvae by a thin gray-black stripe on their posterior ends.## Lifecycle.An adult female lays between 206 and 639 eggs at.

Hermetia illucens. a time. These eggs are typically deposited in crevices or on surfaces above or adjacent to decaying matter such as manure or compost and hatch in about 4 days. Freshly emerged larvae are 0.04 (in), being able to reach a length of 1 (in) and weight of 0.10 to 0.22 (g) by the end of larval stage. The larvae are able to feed on a wide variety of organic matter, adapting to diets with different nutrient content. The larval stage lasts from 18 to 36 days, depending on the food substrates provided to the larvae, of which the postfeeding (prepupal).

Hermetia illucens. stage lasts around 7 days. The length of larval stage can be delayed by months due to low temperature or lack of food. The pupal stage lasts from 1 to 2 weeks. Adults can live typically 47 to 73 days when provided with water and food, such as sugar in captivity or nectar in the wild, or survive for about 8 to 10 days on fat reserves gathered during larval stage when water is provided.## Human relevance and use.The larvae and adults are considered neither pests nor vectors. Instead, black soldier fly larvae play a similar role to that of.

Hermetia illucens. redworms as essential decomposers in breaking down organic substrates and returning nutrients to the soil. The larvae have voracious appetites and can be used for composting household food scraps and agricultural waste products.Additionally, black soldier fly larvae (BSFL) are an alternative source of protein for aquaculture, animal feed, pet food and human nutrition.The larvae are produced and processed in industrial-scale insect factories globally by biotechnology companies such as AgriProtein, InnovaFeed and Protix, the latter operating the world's largest insect factory in the Netherlands.## As decomposers / in composting.Black soldier fly larvae (BSFL) are used to compost waste or convert the.

Hermetia illucens. waste into animal feed. The wastes include fresh manure and food wastes of both animal and vegetable origin. Fly larvae are among the most efficient animals at converting biomass into feed.When the larvae have completed their larval development through six instars, they enter a stage called the "prepupa" wherein they cease to eat, and they tend to migrate toward cool, dark, and dry substrates to pupate. This prepupal migration instinct is used by bins to self-harvest the mature larvae. have ramps or holes on the sides to allow the prepupae to climb out of the composter and drop into a.

Hermetia illucens. collection area.Larvae are beneficial in these ways:Their large size relative to houseflies and blowflies allows them to prevent houseflies and blowflies from laying eggs in decaying matter by consuming larvae of other species. This matters because compost systems inhabited by houseflies and blowflies carry a much greater stench than systems inhabited by BSFL, making" H. illucens" a more human-friendly way to minimize food waste.They are not a pest to humans. Unlike houseflies, adult black soldier flies have greatly-reduced sponging mouthparts and can only consume liquids such as flower nectar or do not eat at all. They do not regurgitate food.

Hermetia illucens. along with digestive enzymes like houseflies, thus do not spread diseases.They are not attracted to human habitation or foods. As a detritivore and coprovore, the egg-bearing females are attracted to rotting food or manure.Black soldier flies do not fly around as much as houseflies. They have less expendable energy due to their limited ability to consume food as adults. They are very easy to catch and relocate when they get inside a house, as they do not avoid being picked up, they are sanitary, and they neither bite nor sting. Their only defense seems to be hiding. When using a.

Hermetia illucens. wet grub bin that will collect or kill all the pupae, the black soldier fly population is easy to reduce by killing the pupae/prepupae in the collection container, before they become flies. They may be killed by freezing, drying, manually feeding to domestic animals, putting the collection container in a chicken coop for automatic feeding, or feeding to wild birds with a mouse/pest-proof feeder.Significant reductions of "E. coli" 0157:H7 and" Salmonella enterica" were measured in hen manure after larvae activity was added onto the manure.They quickly reclaim would-be pollutants: Nine organic chemicals were greatly reduced or eliminated from manure in.

Hermetia illucens. 24 hours.They quickly reduce the volume and weight of would-be waste: The larval colony breaks apart its food, churns it, and creates heat, increasing compost evaporation. Significant amounts are also converted to carbon dioxide respired by the grubs and symbiotic/mutualistic microorganisms. BSFL in a compost system typically reduce the volume of compost by around 50%.Aside from the protein production, fly larvae also produce another valuable resource called frass. Fly larval frass is a granulated and odorless residue that can be used as organic fertilizer directly or through conversion by earthworms.Recent research in the field of entomoremediation shows the potential of.

Hermetia illucens. this insect for purification of biomass contaminated with heavy metals.## As feed.Black soldier fly larvae are used as feed. The harvested pupae and prepupae are eaten by poultry, fish, pigs, lizards, turtles, and even dogs. The insect is one of the few insect species approved to be used as feed in aquaculture in the EU.At the pupal stage, black soldier flies are at their nutritional peak. They can be stored at room temperature for several weeks, and their longest shelf life is achieved at 50 to 60 (F).## As human food.Records of human consumption of "Hermetia illucens" are difficult to.

Hermetia illucens. find.In 2013, Austrian designer Katharina Unger invented a table-top insect-breeding farm called "Farm 432" in which people can produce edible fly larvae at home. It is a multichambered plastic machine that looks like a kitchen appliance and can produce 500 (g) of larvae or two meals in a week.The taste of the larvae is said to be very distinctive. Unger: "When you cook them, they smell a bit like cooked potatoes. The consistency is a bit harder on the outside and like soft meat on the inside. The taste is nutty and a bit meaty.## For producing grease.Black soldier fly.

Hermetia illucens. larvae can be used to produce grease. The grease is usable in the pharmaceutical industry (cosmetics, surfactants for shower gel) thereby replacing other vegetable oils such as palm oil, or it can be used in fodder.## For producing chitin.Black soldier fly larvae can be used to produce chitin. Chitin is used in shipping as an alternative against biofouling. It is also used in water purification. Chitin also has a good potential as soil amendment, to improve soil fertility and plant resilience.## In bioremediation.The larvae of "Hermetia illucens" were used in a bioremediation experiment, in which they utilized up to 49%.

Hermetia illucens. of dry weight corn leaves polluted with cadmium or zinc after 36 days. Artificially polluted corn leaves serves here as a model plant material comparable to plant biomass polluted as a result of phytoextraction. The 49% loss of polluted dry weight is a better result than in the case of composting, which is one of the standard proposed pretreatments for biomass polluted after phytoextraction. The type of heavy metal did not affect the degree of utilization. Cadmium mostly accumulates in the puparium, while zinc accumulates in the adult fly.The use of insect for bioremediation is named entomoremediation.## Farming.## Larval colonies.The.

Hermetia illucens. main difficulty is obtaining black soldier fly larvae or eggs to start or replenish the colony. This is usually done by enticing the soldier flies to lay eggs in small holes over the grub bin. Adult flies lay clusters of eggs in the edges of corrugated cardboard or corrugated plastic. In some regions, it is possible to start or maintain adequate larvae colonies from native soldier flies; however, pest species such as houseflies and blowflies are also drawn to many of the foods used to attract soldier flies (such as fermented chicken feed).In tropical or subtropical climates, they might breed.

Hermetia illucens. year-round, but in other climates, a greenhouse may be needed to obtain eggs in the cooler periods. The grubs are quite hardy and can handle more acidic conditions and higher temperatures than redworms. Larvae can survive cold winters, particularly with large numbers of grubs, insulation, or compost heat (generated by the microorganisms in the grub bin or compost pile). Heat stimulates the grubs to crawl off, pupate, and hatch, and a great deal of light and heat seem to be required for breeding. Many small-scale grub farmers build their larval colonies from eggs deposited by wild soldier flies.## Space and.

Hermetia illucens. shape.Newly emerged soldier flies perform the beginning of their mating ritual in flight. The male grabs onto the female, and then grasps the female's ovipositor with his genitals. They mate while stationary and connected.German scientists have successfully bred soldier flies in a space as small as 10 liters.## Heat.Adults typically mated and oviposited at temperatures of 24 to 40 (C) or more. Around 99.6% of oviposition in the field occurred at 27.5 to 37.5 (C).## Light.Quartz-iodine lamps have been successfully used to stimulate mating of adults. In tropical conditions, morning direct sunlight is optimal for emergence, mating, and egglaying, with.

Hermetia illucens. indirect sunlight often preferred before and after mating.## Humidity.Humidity at 70% is considered optimal for all stages of their lifecycle.Substrate was found to be unnecessary for pupation, but substrate is thought to act as a regulator for humidity which prevents desiccation. A 93% emergence rate was observed when humidity was held at 70%.## Black soldier fly larvae and redworms.Worm farmers often get larvae in their worm bins. Larvae are best at quickly converting "high-nutrient" waste into animal feed. Redworms are better at converting high-cellulose materials (paper, cardboard, leaves, plant materials except wood) into an excellent soil amendment.Redworms thrive on the.

Hermetia illucens. residue produced by the fly larvae, but larvae leachate ("tea") contains enzymes and tends to be too acidic for worms. The activity of larvae can keep temperatures around 37 (C), while redworms require cooler temperatures. Most attempts to raise large numbers of larvae with redworms in the same container, at the same time, are unsuccessful. Worms have been able to survive in/under grub bins when the bottom is the ground. Redworms can live in grub bins when a large number of larvae are not present. Worms can be added if the larval population gets low (in the cold season) and.

Hermetia illucens. worms can be raised in grub bins while awaiting eggs from wild black soldier flies.As a feeder species, BSFL are not known to be intermediate hosts of parasitic worms that infect poultry, while redworms are host to many.## Names and trademarks.BSFL were developed as a feeder insect for exotic pets by D. Craig Sheppard, who named the larvae Phoenix Worms and began marketing them as pet food. In 2006, "Phoenix Worms" became the first feeder insect to be granted a U.S. registered trademark. Other companies also market BSFL under such brand names as NutriGrubs, Soldier Grubs, Reptiworms, Calciworms, BIOgrubs, and.

Hermetia illucens. Obie's Worms (Canada). In Australia, BSFL are marketed as live feeder insects under the brand name Beardie Grubs. In Africa they are marketed as live feeder, meal and oil by ProtiCycle for animal feed, pet food for dogs and cats as well as food for fish such as tilapia and catfish.## Possible natural enemies.In West Africa, "Dirhinus giffardii" has been found to be a parasitoid of "H. illucens" pupae and decrease egg production. It has been found to reduce stocks by up to 72%. The parasite is carried by the wasps and precautions should be taken to protect the larvae.

Hermetia illucens. from exposure to these wasps. Black fly Bioconversion of Food Waste : Black Soldier fly 'Grubby' Research Promises Environmental, Economic Benefits Black soldier fly on the UF / IFAS "Featured Creatures" website.


Question: What is the vertex figure of this object?

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Tetrahedron. of a tetrahedron the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as a "triangular pyramid".Like all convex polyhedra, a tetrahedron can be folded from a single sheet of paper. It has two such nets.For any tetrahedron there exists a sphere (called the circumsphere) on which all four vertices lie, and another sphere (the insphere) tangent to the tetrahedron's faces.## Regular tetrahedron.A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles. It is one of the five regular Platonic solids, which have been known.

Tetrahedron. edge of the base. This follows from the fact that the medians of a triangle intersect at its centroid, and this point divides each of them in two segments, one of which is twice as long as the other (see ).For a regular tetrahedron with side length "a", radius "R" of its circumscribing sphere, and distances "di" from an arbitrary point in 3-space to its four vertices, we haveformula_7## Isometries of the regular tetrahedron.The vertices of a cube can be grouped into two groups of four, each forming a regular tetrahedron (see above, and also , showing one of the.

Tetrahedron. with four congruent triangles as faces; the triangles necessarily have all angles acute. The regular tetrahedron is a special case of a disphenoid. Other names for the same shape include bisphenoid, isosceles tetrahedron and equifacial tetrahedron.## Orthoschemes.A 3-orthoscheme is a tetrahedron where all four faces are right triangles. An orthoscheme is an irregular simplex that is the convex hull of a tree in which all edges are mutually perpendicular. In a 3-dimensional orthoscheme, the tree consists of three perpendicular edges connecting all four vertices in a linear path that makes two right-angled turns. The 3-orthoscheme is a tetrahedron having two.

Tetrahedron. its characteristic tetrahedron by its planes of symmetry.If the tetrahedron has edge length 2, its characteristic tetrahedron's six edges have lengths , , (the exterior right triangle face, the "characteristic triangle" of the tetrahedron), plus , , (edges that are the "characteristic radii" of the tetrahedron). The 3-edge path along orthogonal edges of the orthoscheme is , , , first from a tetrahedron vertex to an tetrahedron edge center, then turning 90° to an tetrahedron face center, then turning 90° to the tetrahedron center. The orthoscheme has four dissimilar right triangle faces. The exterior face is a 30-60-90 triangle which.

Tetrahedron. is one-sixth of a tetrahedron face. The three faces interior to the tetrahedron are: a right triangle with edges , , , a right triangle with edges , , , and a right triangle with edges , , .## Space-filling tetrahedra.A space-filling tetrahedron packs with directly congruent or enantiomorphous (mirror image) copies of itself to tile space. The cube can be dissected into six 3-orthoschemes, three left-handed and three right-handed (one of each at each cube face), and cubes can fill space, so the characteristic 3-orthoscheme of the cube is a space-filling tetrahedron in this sense. A disphenoid can be.

Tetrahedron. area of a triangle.Let be three edges that meet at a point, and the opposite edges. Let be the volume of the tetrahedron; thenformula_19whereformula_20The above formula uses six lengths of edges, and the following formula uses three lengths of edges and three angles.formula_21## Heron-type formula for the volume of a tetrahedron.If , , , , , are lengths of edges of the tetrahedron (first three form a triangle; with opposite , opposite , opposite ), thenformula_22where formula_23 formula_24## Volume divider.Any plane containing a bimedian (connector of opposite edges' midpoints) of a tetrahedron bisects the volume of the tetrahedron.## Non-Euclidean volume.For.

Tetrahedron. as calculated here. Then another volume formula is given byformula_25## Properties analogous to those of a triangle.The tetrahedron has many properties analogous to those of a triangle, including an insphere, circumsphere, medial tetrahedron, and exspheres. It has respective centers such as incenter, circumcenter, excenters, Spieker center and points such as a centroid. However, there is generally no orthocenter in the sense of intersecting altitudes.Gaspard Monge found a center that exists in every tetrahedron, now known as the Monge point: the point where the six midplanes of a tetrahedron intersect. A midplane is defined as a plane that is orthogonal to.

Tetrahedron. segment joining the midpoints of two opposite edges is called a "bimedian" of the tetrahedron. Hence there are four medians and three bimedians in a tetrahedron. These seven line segments are all concurrent at a point called the "centroid" of the tetrahedron. In addition the four medians are divided in a 3:1 ratio by the centroid (see Commandino's theorem). The centroid of a tetrahedron is the midpoint between its Monge point and circumcenter. These points define the "Euler line" of the tetrahedron that is analogous to the Euler line of a triangle.The nine-point circle of the general triangle has an.

Tetrahedron. face.The radius of the twelve-point sphere is one third of the circumradius of the reference tetrahedron.There is a relation among the angles made by the faces of a general tetrahedron given byformula_26where "α" is the angle between the faces "i" and "j".The geometric median of the vertex position coordinates of a tetrahedron and its isogonic center are associated, under circumstances analogous to those observed for a triangle. Lorenz Lindelöf found that, corresponding to any given tetrahedron is a point now known as an isogonic center, "O", at which the solid angles subtended by the faces are equal, having a common.

Tetrahedron. and counterclockwise orientations of the surface.Putting any of the four vertices in the role of "O" yields four such identities, but at most three of them are independent: If the "clockwise" sides of three of them are multiplied and the product is inferred to be equal to the product of the "counterclockwise" sides of the same three identities, and then common factors are cancelled from both sides, the result is the fourth identity.Three angles are the angles of some triangle if and only if their sum is 180° (π radians). What condition on 12 angles is necessary and sufficient for.

Tetrahedron. them to be the 12 angles of some tetrahedron? Clearly the sum of the angles of any side of the tetrahedron must be 180°. Since there are four such triangles, there are four such constraints on sums of angles, and the number of degrees of freedom is thereby reduced from 12 to 8. The four relations given by this sine law further reduce the number of degrees of freedom, from 8 down to not 4 but 5, since the fourth constraint is not independent of the first three. Thus the space of all shapes of tetrahedra is 5-dimensional.## Law of.

Tetrahedron. of the tetrahedron.With this definition, the circumcenter of a tetrahedron with vertices ,, can be formulated as matrix-vector product:formula_35In contrast to the centroid, the circumcenter may not always lay on the inside of a tetrahedron.Analogously to an obtuse triangle, the circumcenter is outside of the object for an obtuse tetrahedron.## Centroid.The tetrahedron's center of mass computes as the arithmetic mean of its four vertices, see Centroid.## Faces.The sum of the areas of any three faces is greater than the area of the fourth face.## Integer tetrahedra.There exist tetrahedra having integer-valued edge lengths, face areas and volume. These are called Heronian.

Tetrahedron. tetrahedra. One example has one edge of 896, the opposite edge of 990 and the other four edges of 1073; two faces are isosceles triangles with areas of and the other two are isosceles with areas of , while the volume is .A tetrahedron can have integer volume and consecutive integers as edges, an example being the one with edges 6, 7, 8, 9, 10, and 11 and volume 48.## Related polyhedra and compounds.A regular tetrahedron can be seen as a triangular pyramid.A regular tetrahedron can be seen as a degenerate polyhedron, a uniform "digonal antiprism", where base polygons are.


Question: Which historic county does this island belong to?

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Sumburgh Head. Sumburgh Head is a headland located at the southern tip of the Shetland Mainland in northern Scotland. The head consists of a 100 m high rocky spur and topped by the Sumburgh Head Lighthouse. In the Old Norse language, Sumburgh Head was called "Dunrøstar høfdi", it means "The Head onto the loud tide-race", referring to the noise of Sumburgh Roost. Robert Stevenson was the engineer in charge of building the Sumburgh Head lighthouse. Work started on the building in 1819, and the light was first lit in 1821.## Local ecology.The area is now recognized as a nature reserve by the.

Sumburgh Head. Royal Society for the Protection of Birds. The cliffs are home to large numbers of seabirds with 33,000 puffins being estimated in the year 2000. These numbers have declined sharply: for example only 570 of the birds were counted in 2017. The decline in Puffin numbers also appears to apply to other species native to Sumburgh Head. In as birds, Sumburgh Head has become a popular viewing point for whales and dolphins.## Nearby locations.Sumburgh Airport, which takes its name from the head, lies immediately to the north, and serves as the main airport for the Shetland Islands. Flights from here.

Sumburgh Head. connect to mainland Scotland, the Orkney Islands and Norway. Also close to the Sumburgh Head is the archaeological site of Jarlshof, at which a series of settlements existed dating back to the neolithic period. The tiny settlement of Grutness, which is the terminus of the Shetland Mainland to Fair Isle ferry service, lies 1 (mi) north of Sumburgh Head. Images from around Sumburgh.


Question: What is the conservation status of this animal? (The status is assigned by the international union for conservation of nature. Choose one among Endangered,Least Concern,Critically Endangered,extinct species,extinct in the wild,Vulnerable,Near Threatened,Data Deficient).

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Eastern chimpanzee. as Endangered. Although the common chimpanzee is the most abundant and widespread of the non-human great apes, recent declines in East Africa are expected to continue due to hunting and loss of habitat. Because chimpanzees and humans are physiologically very similar, chimpanzees succumb to many diseases that afflict humans. If not properly managed, research and tourism also presents a risk of disease transmission between humans and chimpanzees. This subspecies has been extensively studied by Dr. Jane Goodall at Gombe Stream National Park.## Physical description.Adult chimpanzees in the wild weigh between 40 and 65 (kg). Males can measure up to 145.