Final answer:
Plants and other photosynthetic organisms remove carbon from the atmosphere, while organisms engaging in cellular respiration release carbon into the atmosphere.
Step-by-step explanation:
Carbon dioxide is removed from the atmosphere through the process of photosynthesis by producers such as plants. They convert carbon dioxide into organic compounds.
On the other hand, living organisms release carbon into the atmosphere through cellular respiration. During this process, carbon is oxidized and converted into carbon dioxide as a byproduct.
Therefore, plants and other photosynthetic organisms remove carbon from the atmosphere, while organisms engaging in cellular respiration release carbon into the atmosphere.