Question

which process releases carbon dioxide into the atmosphere? photosynthesis respiration assimilation nitrogen fixation

Explanation:

Photosynthesis takes in carbon - dioxide and releases oxygen. Respiration is the process by which living organisms break down organic matter to release energy, and carbon - dioxide is a by - product. Assimilation is related to the incorporation of nutrients into an organism's body, and nitrogen fixation is about converting nitrogen gas into a usable form for plants.

Answer:

B. Respiration