Final answer:
Photosynthesis and cellular respiration are interconnected processes that rely on each other for their reactants. They form a cycle where the products of one process become the reactants of the other process, allowing for the storage and release of energy in living organisms.
Step-by-step explanation:
Photosynthesis and cellular respiration are like two sides of the same coin, as one process produces the reactants needed for the other process. During photosynthesis, carbon dioxide and water are used to produce glucose and oxygen. In cellular respiration, glucose and oxygen are used to produce carbon dioxide, water, and ATP. The products of one process are the reactants of the other, creating a cycle that allows for the storage and release of energy in living organisms.