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-The remains and relics of dead animals of the past are called as fossils.

-Fossil archaeopteryx process features of reptiles as well as birds. This suggests that bird have evolved from reptiles.

Age of fossils:-

- The age of the fossil is determined by the depth of the fossil.

-The second way of dating fossils is by detecting the ratios of different isotopes of the same element in the fossil material.

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Series 2 | Heredity and evolution part 12 (Evolution, variation)

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Heredity and evolution part 12 (Evolution, variation) [00:13:34]
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