What are fossils? What do they tell about the process of evolution?
Fossils are the impressions or remains of ancient life found preserved in sedimentary rocks, snow or oil.
Information given by fossils:
(i) Fossils reveal that the life form which existed earlier do not exist today.This suggests that the living forms are ever changing.
(ii) Fossils indicate the time when these organisms existed on earth.
(iii) Fossils indicate about the extent of evolution that has taken place when they are compared with their present forms.
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