SC.912.L.18.7 Which of following would decrease the rate of photosynthesis in a plant?
A. a decrease in the amount of carbon dioxide in the air
B. a decrease in the amount of oxygen in the air
C. an increase in the amount of oxygen in the air
D. an increase in the amount of carbon dioxide in the air

A. It is 100% A.

Explanation:

Because plants need carbon dioxide to photosynthesize

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