1.) The reactants of photosynthesis are water, sunlight, and carbon dioxide. The products of photosynthesis are glucose and oxygen.
The reactants of cell respiration are oxygen and glucose. The products of cell respiration are carbon dioxide, water, and ATP.
2.) Photosynthesis relates to the carbon cycle because plants take in carbon dioxide to use in photosynthesis. Cell respiration relates to the carbon cycle because animals or humans release carbon after cell respiration is complete.
3.) The difference between aerobic and anaerobic respiration is that in aerobic oxygen is used and in anaerobic oxygen is not used.