In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer. how did she change the circuit? a) she changed a short circuit to an open circuit. b) she changed an open circuit to a closed circuit. c) she changed a closed circuit to an open circuit. d) she changed a closed circuit to a short circuit

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.