Science, asked by sultanimran130, 7 months ago

Briefly describe the mechanism of breathing.of class 7 panjab board of Pakistan ​

Answers

Answered by deechudeeku5
1

Answer:

the mechanism of breathing involves two main processes: inspiration and expiration. Inspiration occurs when the diaphragm and the external intercostal muscles contract. Expiration occurs when the diaphragm and the intercostal muscles relax.

Explanation:

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