Both animal and plant cells undergo respiration. Although this respiration goes toward different activities (photosynthesis for plants and muscular respiration for animals), both processes intake oxygen and get rid of carbon dioxide as a waste product.
B) Oxygen is used for respiration and carbon dioxide is a waste product.
Explanation:
The answer is oxygen is used for respiration and carbon dioxide is a waste product. Oxygen is used by cells to produce energy,carbon dioxide and water.
