CBSE Class 7 - Breathing Videos
- WHY DO WE REQUIRED OXYGEN?
- what is buding
- what is nasal passage
- Why do we feel hungry after a physical exercise
- Why do we feel hungry after a physical activity
- Why should we always breathe through the nose and through mouth?
- What is breathing
- how can you different between inhalation and exhalation
- What is breathing?
- Explain the terms inhalation and exhalation.
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