Final answer:
Photosynthesis and cellular respiration form a cycle by utilizing each other's products as fuel.
Step-by-step explanation:
Photosynthesis and cellular respiration form a cycle by the products from one process being used as fuel for the other process.
In photosynthesis, plants capture sunlight energy and convert it into glucose and oxygen. In cellular respiration, organisms break down glucose and use oxygen to produce energy, carbon dioxide, and water.
Therefore, the glucose and oxygen produced in photosynthesis serve as the fuel for cellular respiration, while the carbon dioxide and water produced in cellular respiration serve as the inputs for photosynthesis.
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