Answer:
Photosynthesis is the process by which plants and other autotrophs use carbon dioxide, water, and light energy to produce carbohydrates (food) and oxygen. Aerobic cellular respiration is the process by which cells break down carbohydrates, using oxygen to produce the energy-storing molecule ATP, carbon dioxide, and water.
The products of photosynthesis are the reactants for aerobic respiration, and the products of aerobic respiration are the reactants of photosynthesis.
Photosynthesis
6CO2 + 6H2O (+ light energy) C6H12O6 + 6O2
Respiration
C6H12O6 + 6O2 --> 6CO2 + 6H2O + energy (ATP)