Two wires with identical compositions (same material) and lengths have the same current flowing through them. Wire A has a diameter that is half as large as wire B. You expect the Joule heating:. a. to be zero in both wires.
b. to be the same in both wires.
c. to be larger in wire A
d. to be larger in wire B.

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

Ok what do you need with