Which type of energy is easiest to move around the world? A) batteries
OB) alternating current
C) direct current
OD) none of the above

The answer is d) by requesting advice on science internet sites

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.