(i) Fossils : The remains/impression of dead / decayed plants / animals.
(ii) Formation of fossils: Formed when dead organisms are compressed under high pressure deep under the soil.
(iii) Determination of age of fossil-Two methods :
(i) Relative method,
(ii) Carbon dating method
(iv) The presence of fossilized remains of the organisms is the evidence of the existence of the organisms millions of years ago, out of which some have become extinct.
(v) Fossil also helps in the determination of the connecting links between various groups and their origin from the primitive ones.
