Question

*Continuous upward and downward movement of _______ is necessary to bring about the breathing.*

1️⃣ diaphragm
2️⃣ trachea
3️⃣ nose
4️⃣ throat​

Answer 1

Answer:

trachea

Explanation:

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Answer 2

Answer:

1. diaphragm

Explanation:

It is because when you inhale the air, diaphragm in your breathing system moves fully upward and while you exhale the air, diaphragm moves fully downwards.