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PSYCHO15rus [73]
3 years ago
10

How do index fossils help scientists?

Biology
1 answer:
Sergio039 [100]3 years ago
4 0

Answer:

Fossils are used to determine the ages of rock layers. Index fossils are the most useful for this. Index fossils are of organisms that lived over a wide area. ... An index fossil allows a scientist to determine the age of the rock it is in.

Explanation:

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