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Scientists have hypothesized that oxygen began to build up in the Earth's atmosphere after the development of living things with the ability to A. breathe air. B. form tissues. C. photosynthesize. D. reproduce
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Scientists have hypothesized that oxygen began to build up in the Earth's atmosphere after the development of living things with the ability to A. breathe air. B. form tissues. C. photosynthesize. D. reproduce sexually.

User NGambit
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7 votes

Answer:

The answer is c. photosynthesize

User Jeetendra Pujari
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4 votes
C. photosynthesize

I hope this helps:)
User Notexactly
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