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Debora [2.8K]
3 years ago
15

How do scientist use index fossils

Biology
2 answers:
MissTica3 years ago
4 0

Answer:  Fossils are used to determine the ages of rock layers. Index fossils are of organisms that lived over a wide area.

Yanka [14]3 years ago
4 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. I really hope this helps.

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