CBSE Class 7 Answered
What is breathing
Asked by sridhargadadasu | 09 Jul, 2019, 11:38: AM
Expert Answer
- Breathing is a physical process which involves movement of air, in and out of the lungs.
- Oxygen-rich air from the external environment is taken inside the lungs and air containing more amount of carbon dioxide is expelled to the outside environment.
- Breathing is a continuous process that occurs throughout the life of an organism.
- Inhalation and exhalation are the two steps of breathing, which occur continuously one after the other.
- Inhalation or inspiration is the movement of air from the outside environment to the inside of the body.
- Exhalation or expiration is the movement of air from the inside of the body to the outside environment.
Answered by Sheetal Kolte | 09 Jul, 2019, 11:58: AM
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