Which of the following is the main role of photosynthesis on earth?

Question

A. Supply needed reactants for cellular respiration
B. Generate oxygen for the atmosphere
C. Provide food for organisms that do photosynthesis
D. All above responses are correct

Answer 1

D. All above responses are correct

Photosynthesis plays a crucial role on Earth by supplying the needed reactants for cellular respiration (A), generating oxygen for the atmosphere (B), and providing food for organisms that perform photosynthesis (C). Therefore, all the responses listed are correct.