Which are uses of electromagnetic waves? Check all that apply. cooking foods
insulating buildings
using heat lamps
transmitting radio signals
using medical imaging
lighting rooms
cooling refrigerators

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.