Question

Breathing is an important activity of the respiratory system.

The process of breathing involves

• A. Taking in oxygen and throwing out carbon dioxide from the body
• B. Taking in carbon dioxide and throwing out oxygen from body
• C. Throwing out carbon-dioxide only from the body
• D. Breathing oxygen only into the body

Answer 1

The correct option is A

Taking in oxygen and throwing out carbon dioxide from the body

Breathing involves inhaling oxygen in the body and exhaling carbon dioxide from the body.