Question

The process of giving out air rich in carbon dioxide is known as

• A. inhalation
• B. exhalation
• C. breathing
• D. respiration

Answer 1

The correct option is B

exhalation

Breathing is the process that moves air in and out of the lungs. It is required to sustain life. Exhalation is the process of releasing air (out of the lungs) which is rich in carbon dioxide. Inhalation is the process of intaking air which is rich in oxygen. Respiration is a set of metabolic reactions and processes that take place with in the cells of organisms.