Question

Which geologic features help scientists determine the relative ages of rocks by their positions? Select three options.

magma

erosion

intrusions

index fossils

cross-cutting relationships

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Answer 1

Option D, Index fossil helps scientists to determine the relative ages of rocks by their positions

Step-by-step explanation:

Index fossils are arranged in layer in such a way that the lowest layer represent the oldest fossil and the top most layer represents the youngest fossil. Scientist use this concept to determine the relative age of the rocks based on their position beneath the earth’s surface

Hence, option D is correct