Earth has supported life for approximately
A. 20 billion years.
B. 3.8 - 3.7 billion years.
C. 1.5 billion years.
D. 700 - 800 million years.
B. 3.8 - 3.7 billion years.
Biology & Microbiology
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What will be an ideal response?
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What will be an ideal response?
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