Multiple Choice
What best describes biologists' current hypothesis about the production of the Earth's atmospheric oxygen?
A) Photosynthesis by terrestrial plants produces atmospheric oxygen.
B) The breakdown of iron ore deposits produces atmospheric oxygen.
C) Photosynthesis by photosynthesizing bacteria produces atmospheric oxygen.
D) Chemosynthesis by aquatic plants produces atmospheric oxygen.
Correct Answer:
Verified
Correct Answer:
Verified
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