When we breathe in, we inhale many gases, including oxygen.…

Biology Breathing and Exchange of Gases Mechanism of Breathing and Pulmonary Volumes Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 23, 2026

When we breathe in, we inhale many gases, including oxygen. What happens to the gases that the body can't use?

They are exhaled.

They are changed into oxygen by the lungs.

They circulate through the body and are disposed off later.

They are absorbed into the digestive system and used to create energy.

Text Solution

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The correct answer is:

(a)

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