Give scientific reason.
Vertebrates have slowly originated from invertebrates.
- The Carbon dating technique used to assess the age of fossils indicated that invertebrates were present on the earth much before the vertebrates.
- Fossils of invertebrates are found buried deep as they are very old and belong to the Palaeozoic era.
- The Cenozoic era showed the presence of mammals and birds. Their fossils were seen in the upper strata of the earth’s crust.
- It was also observed that vertebrates are more complexed than invertebrates.
Therefore, it can be said that vertebrates have slowly originated from invertebrates.
Concept: Evidences for Biological Evolution
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