Question

3. If we close our nostril and mouth tightly, we soon start feeling uneasy and cannot hold our breath even for one minute. Why does it happen? Explain. 4. Draw a labelled diagram of Human Respiratory system.​

Answer 1

Answer:

Because our lung needs oxygen for every seconds. if we close our nostrils and mouth the lung can't process and stops it process. that is why we feel uneasy.

Explanation:

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