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Rudik [331]
3 years ago
12

5. Why are index fossils useful in dating rock layers?

Biology
1 answer:
mr Goodwill [35]3 years ago
8 0

Answer:

Fossils are used to determine the ages of rock layers.Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.

Explanation:

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