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Photosynthesis and respiration are supported by the recycling of _______ and __________.

A. nitrogen, oxygen

B. water, nitrogen

C. carbon, oxygen

D. oxygen, nitrogen

2 Answers

5 votes

correct answer: Carbon and Oxygen

User Ryan Zeelie
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something that involves oxygen because because oxygen is recycling from the water cycle...a.c.d
User A For Alpha
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