. What are fossil? What do they tell us about the process of evolution
Ans. The remains (impression) od dead animal, or plants, that lived in the remote past, are known as fossil.
Fossil provide evidence for evolution, e.g., a fossil called Archaeopteryx had feathered wings like birds but teeth and tail like reptiles hence suggestion that birds and reptiles had a common ancestor.
Fossil provide direct evidence of past like thus provide convincing proof of organic evolution.