i. The remains of dead animals and plants that lived in the remote past are known as fossils.
ii. The scientists utilize the information acquired from fossil study as it provides evidence for evolution. For example, the fossil of the bird called ‘Archaeopteryx’ looks like a bird, but it has many other features which are found in reptiles.
iii. Archaeopteryx has feathered wings like those of birds but teeth and tail like those if reptiles. So, Archaeopteryx is known as the ‘Connecting link’ between reptiles and birds. It might suggest that birds have evolved from the reptiles.
iv. Thus, fossil provides the evidence that the present animals have originated from the previously existing ones through the process of continuous evolution.
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