The ______ period spans the time from the end of the Pliocene epoch 1.8 million years ago to the present. 1.Tertiary 2.Quaternary 3.Cretaceous 4.Triassic

Biology · High School · Mon Jan 18 2021

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Here, option (2) is correct.

The Quaternary period spans the time from the end of the Pliocene epoch 1.8 million years ago to the present. This is less than 0.1% of all of geologic time.