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What is geologic time?
A) a period of time during which only rocks existed
B) a unit of time used to measure rock formation
C) the period before humans appeared on Earth
D) the time that has passed since Earth formed

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ctillson

Answer: (D)

a system of chronological dating that relates geological strata to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.

Explanation:

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