Ncert Exercises & Solutions

Which of the following does not occur during breathing?

1. Brings the air to body temperature

2. Warms up the air

3. Diffusion of gases

4. Cleans up the air

(c) Diffusion of gases is a physical phenomenonthat takes place between the tissue and blood vessels, and does not occur during breathing whereas bringing air to the body temperature, its cleaning and warming occurs during the process of breathing.

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