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The photosynthetic activity of desert plants is often reduced in the middle of the day. What is the most reasonable explanation for this fact?
A. Enzymes are denatured by the high temperatures.
B. There is not sufficient water for photosystem I.
C. Most of the light is reflected by the thick cuticle.
D. The stomata close to preserve water and gas exchange decreases.


Sagot :

D. the stomata close to preserve water and gas exchange decreases.
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