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As life began to populate earth’s surface, what change was seen in the atmosphere? A. more oxygen was consumed B. more carbon dioxide was added C. more carbon dioxide was consumed D. more oxygen was added
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As life began to populate earth’s surface, what change was seen in the atmosphere?

A. more oxygen was consumed

B. more carbon dioxide was added

C. more carbon dioxide was consumed

D. more oxygen was added

User Omid Shariati
by
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2 Answers

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D. More oxygen was added.

User Peter Thomassen
by
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4 votes
Your answer is D

Biology is my best subject
User Manojlds
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