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nata0808 [166]
3 years ago
7

How is fossil evidence used to determine relative age of rocks?

Geography
2 answers:
lana66690 [7]3 years ago
7 0

Answer:

Explanation:

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.

aev [14]3 years ago
3 0
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur. I hope this helped!
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