Two cars are moving in the same direction. One car with momentum p1 collides with another, which has momentum p2. Their momenta become p′1 and p′2 respectively. Considering frictional losses, compare (p′1+p′2) with (p1+p2). a) The value of (p′1+p′2) is zero.
b) The values of (p1+p2) and (p′1+p′2) are equal.
c) The value of (p1+p2) will be greater than (p′1+p′2).
d) The value of (p′1+p′2) will be greater than (p1+p2).

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.

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It would stay the same