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    Raven Biology of Plants
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    Exam 1: Botany: an Introduction
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    Humans First Appeared About ______ Years Ago
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Humans First Appeared About ______ Years Ago

Question 9

Question 9

Multiple Choice

Humans first appeared about ______ years ago.


A) 2000
B) 200,000
C) 2 million
D) 20 million
E) 200 million

Correct Answer:

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