Question

What will happen if humans start taking air from mouth instead of nose

Answer 1

the nose has nostrils inside it which makes the air going inside our body clean but if humans will start taking air from mouth instead of nose then it will be harmful bcz the air would not be cleaned and will cause diseases.

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Answer 2

if humans start taking air from mouth some dirt particals may enter in us if we take air through nose that dirt particals cant go in as hair is there in our nose.