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Oxygen is

a product of photosynthesis and cellular respiration.

a reactant of photosynthesis and cellular respiration.

a product of photosynthesis and a reactant of cellular respiration.

a reactant of photosynthesis and a product of cellular respiration.

User CletusW
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1 Answer

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Answer:

a product of photosynthesis and a reactant of cellular respiration

User Mcserep
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