Which statement supports the law of conservation of energy? A. When toasting bread, the electrical energy is converted to light and heat energy.
B. When eating an apple, the potential energy is destroyed during food digestion.
C. When a ball rolls down a hill, the potential energy stays the same.
D. When a lamp is turned on, the electrical energy is stored as light and heat energy.

Ithink they do have the same properties just in less quantities i think

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.