Which of the Following Best Explains Why Rocks Can Be

Which of the following best explains why rocks can be used to interpret the geologic past?

A) Different types of rocks form in different types of environments.
B) The minerals in rocks tell us how old rocks are.
C) Rocks contain varying amounts of carbon.
D) The hardness of rocks tells us how old they are.
E) The chemical composition of rocks tells us how old they are.

Correct Answer:

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