Question

what is fossils? how are they formed?

Answer 1

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Question:
Answer:
Fossils are preserved traces of living organisms.Eg: if a dead insect gets trapped in hot mud, it doesn't decompose easily. Eventually the mud will harden and retain the impression of the body parts of the insect thus, the insect is fossilised into rocks.

Excavating : This is a relative method. as we dig into the soil, the fossils we find closer to the surface we more recent than the fossils we find in the deeper layers.

Radio-Carbon dating : The ratio of different isotopes of the same element present in the fossil can tell us how old the fossil is . fossil give the palentological evidence for evolution.


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Answer 2

Hi friend,
fossils are impressions of an ancient plant or animals in embedded in a rock or soil that exists million years ago.
when a plant or animal dies usually it decomposes but if it remains in a mud silt clay its projection and impression stay there which can seen after million of years formed into a fossil