Question

why we breathe through mouth when our nose is bleeding​

Answer 1

Answer:

Another reason to breathe through the nose is that doing so can help warm and humidify the air to prepare it for our lungs. Breathing properly helps maintain the correct balance of oxygen and carbon dioxide in the blood. It is the amount of carbon dioxide in our blood that helps regulate the pace of our breathing.

Explanation

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Answer 2

Answer:

this drain blood into your nose instead of down the back of your throat.