what is Fossil? How are they formed ?List two method of determining the age of fossils? Explain in brief the importance of fossils in deciding the evolutionary relationship?
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Fossils are the preserved traces of organisms and plants which lived millions of years ago.
They are formed by the action of decomposers on the organism.
The two methods are relative method and carbon-14 dating.
Fossils are the important evidence for evolution therefore it should be preserved.
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Fossils
- The remains of dead or decayed plants and animals are called fossils.
Formation of fossils
- Fossils are formed when dead organisms are compressed under high pressure deep under the soil.
Methods of determining the age of fossils
- Relative method
- Carbon dating method
Importance of fossils
- Fossils help in determination of the connecting links between various groups and their origin from the primitive ones.
- The presence of fossilized remains of the organisms is the evidence of existence of the organisms millions of years ago, out of which some have become extinct.
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