How long did the earth exist before life appeared on it?
A. 1 billion years
B. 1.5 bil...
Biology, 03.02.2021 17:00, tylalowther1114
How long did the earth exist before life appeared on it?
A. 1 billion years
B. 1.5 billion years
C. 2 billions years
D. 2.5 billion years
Answers: 1
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