AP BIOLOGY

Detailed explanation-1: -Most mammals breathe through their mouths and noses and send oxygen to their body via the lungs.

Detailed explanation-2: -All mammals use a pair of lungs for breathing oxygen. All mammals need oxygen to survive, which is contained in the air. Marine mammals live to philosophy at the surface of the water.

Detailed explanation-3: -Mammals are animals that breathe through their lungs, give birth to live offspring (rather than eggs), and feed their young with their mothers’ milk. Oxygen, a molecule found in the air and water, is required by all species, including humans. Q.

Detailed explanation-4: -The main function of the lungs is the process of gas exchange called respiration (or breathing). In respiration, oxygen from incoming air enters the blood, and carbon dioxide, a waste gas from the metabolism, leaves the blood. A reduced lung function means that the ability of lungs to exchange gases is reduced.