Question

when we exhale carbon dioxide, what do plants provide in return? carbon dioxide oxygen nitrogen water vapor

Explanation:

Plants carry out photosynthesis. In this process, they take in carbon dioxide (\(CO_2\)) and water (\(H_2O\)), and using light energy, they produce glucose (\(C_6H_{12}O_6\)) and oxygen (\(O_2\)). Humans and other animals inhale oxygen for respiration (a process that produces carbon dioxide as a waste product). So when we exhale carbon dioxide (which plants use for photosynthesis), plants provide oxygen in return.

Answer:

oxygen