How are photosynthesis and cellular respiration related?
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a. they are both performed by plants.
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b. they are both performed by animals.
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c. they oth produce glucose molecules.
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d. they both require energy from the sun.

The answer is A. They are both performed by plants.

Explanation: Plants carry out photosynthesis during the day because they require energy from the sun in order to carry out photosynthesis, and plants also carry out cellular respiration during the night because the cells do not needs energy from the sun. Cells get their energy from oxygen which they get as a product from photosynthesis.

well, i believe that the answer is 2. : 3