Answer:
C. is a passive process caused by increased intrathoracic pressure.
Explanation:
Inhalation is an active process as it includes the contraction of muscles and diaphragm. Exhalation is a passive stage of breathing. It does not include any muscular contraction. Rather, diaphragm and the external intercostal muscles become relaxed. This reduces the volume of the thoracic cavity and lungs. The reduced volume causes increased air pressure in alveoli as compared to the atmospheric pressure. The increased pulmonary pressure drives the movement of air towards the outside of the body.
Chromosomes and autosomal or somatic cells
The predator species keeps the prey species under control. Without predators, prey animals would over populate.
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