The chemical reaction for photosynthesis is: 6co2 + 6h2o → c6h12o6 + 6o2 the chemical reaction for cellular respiration is: c6h12o6 + 6o2 → 6co2 + 6h2o what can be said about these two reactions?

Answer -  You can say that both reactions is important because

Without the chemical reaction of photosynthesis you cant produce oxygen and glucose which is needed for the production of ATP.

Without cellular respiration there would be not exchange of Carbon aka C02 and Water which is essential for photosynthesis formula. 

Reasoning - Without these two it would be render less to life. Since these are the most important chemically made up.

The correct answer is c