Biodiversity generally increases from the poles to the equator, and biodiversity is equated with the number of different organisms present in a habitat . Given these facts, what increases in habitats from the poles to the equator among the following options:
- The number of individuals
 - sub-units of species
 - the Arctic
 - different organisms' numbers
 - ice
 - biological diversity
 - penguins
 - heat and light


 

    different organisms' numbers     