Question

Which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their positions?

Answer 1

Answer:

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.

Explanation:

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