Consider this living plant a system. To be alive, the plant needs energy. As a plant, it produces its own usable chemical energy by photosynthesis and uses that same energy through cellular respiration. One output of photosynthesis is a critical reactant or input for respiration. That is

Question

Responses
A water.water.
B oxygen.oxygen.
C sunlight.sunlight.
D carbon dioxide.

Answer 1

D carbon dioxide.