20. Which of the following will not make a fossil ?
(A) Decomposed organic material (B) Casts
(C) Animal foot prints
(D) Loose animal bones
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Explanation:
A ) decomposed organic material
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The one which will not make a fossil is Option A: Decomposed organic material.
- Fossils are animal remains created from their body parts or traces while they were alive.
- After an animal has died, any body part that remains, such as loose animal bones, constitutes a fossil.
- Animal footprints and castings also become fossilised in the form of traces.
- Decomposed organic material, on the other hand, does not produce a fossil.
- To become a fossil, a component must last for a long time and not break down or decay.
- If any animal remains are buried beneath, they will become fossils if they are preserved from degrading by decomposers.
- Hence, decomposed material is not a fossil.
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