Answer:
The correct answer will be option photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
Explanation:
Photosynthesis is a process by which plants and other photo-autotrophs synthesize food using water and carbon dioxide from the environment in the presence of sunlight. Photosynthesis releases O₂ in the atmosphere.
6CO₂+ 6H₂O → C₆H₁₂O₆+ 6O₂.
Respiration is a process of oxidation of food or glucose to form energy molecule using oxygen. Respiration releases CO₂ in the atmosphere.
C₆H₁₂O₆+ 6O₂ → 6CO₂+ 6H₂O + ATP.
Since, photosynthesis use carbon dioxide from the atmosphere to make food while respiration uses oxygen and releases carbon dioxide to the atmosphere therefore, photosynthesis removes carbon from the atmosphere while cellular respiration releases carbon back into the atmosphere is the correct answer.