The chemical equation shown represents photosynthesis. Carbon dioxide + A + light > B + oxygen.

What is the role of substance A in photosynthesis?

A. It stores chemical energy for plants and animals.
B. It traps light energy and converts it into chemical energy.
C. It combines with carbon dioxide and light to form glucose.
D. It combines with carbon dioxide and light to form hydrogen.

C

Explanation:

Photosynthesis is usually represented by the equation Carbon dioxide + water + light --> glucose + oxygen.

Therefore, A substance is water and B is glucose

A is incorrect because it's talking about glucose

B is incorrect because it's talking about chlorophyll, the important pigment in photosynthesis

D is incorrect because it combines to form oxygen, not hydrogen

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers