AP BIOLOGY

Detailed explanation-1: -Answer: Solution: Animals, during respiration, take in oxygen and release carbon dioxide gas. Plants, on the other hand, utilize this carbon dioxide gas in the process of photosynthesis to produce food and release oxygen in the atmosphere.

Detailed explanation-2: -In animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.

Detailed explanation-3: -During cellular respiration, glucose and oxygen are changed into energy and carbon dioxide. Therefore, carbon dioxide is released into the atmosphere during the process of cellular respiration. Respiration is also the process by which once-living (organic) organisms are decomposed.

Detailed explanation-4: -Animals and plants need to get rid of carbon dioxide gas through a process called respiration.

Detailed explanation-5: -Animals breathe, oxygen and give out carbon dioxide.