Multiple Choice
The Cenozoic Era,during which the diversity of animals living today arose,has extended from 65 mya to the present.This is approximately ___ of the geologic timescale.
A) 4%
B) 7%
C) 15%
D) 1.5%
E) None of the answer choices are correct.
Correct Answer:

Verified
Correct Answer:
Verified
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