Question

1. how do living organisms return carbon to the atmosphere in the carbon cycle? decomposition and respiration respiration and photosynthesis

Explanation:

Living organisms return carbon to the atmosphere through respiration, where they break down organic compounds to release carbon - dioxide. Decomposition also plays a role as decomposers break down dead organisms and waste, releasing carbon back into the atmosphere. Photosynthesis, on the other hand, takes in carbon - dioxide from the atmosphere, not returning it.

Answer:

decomposition and respiration