Question

Give reason for the following:
We need to breathe

Answer 1

Breathing:

1. The process of taking in air rich in oxygen and giving out air rich in carbon dioxide is called breathing.
2. The process of taking in air that is rich in oxygen is called inhalation whereas the process of expelling out air that is rich in carbon dioxide is known as exhalation.
3. Breathing is the only way to get the oxygen required for various metabolic processes in the body.
4. Hence, we need to breathe in order to survive.