A man attempts to push his couch to the left. The man is too weak and the couch does not move. Does the man exert a force on the couch? Select one:
a. No because the couch did not move.
b. Not enough information to determine.
c. No because the man did not pull the couch.
d. Yes because the man pushed on the couch while other forces caused the couch to not nove mu

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.

The sun's gravitational pull is weaker on the planets that are closer to it, i think.