English

Give Suitable Explanations for the Following : - Biology

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Question

Give suitable explanations for the following :

One should breathe by nose and never by mouth. 

Short/Brief Note
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Solution

One should breathe by nose and never by mouth because nose contains hair and mucous to trap dust and micro-organisms, so that the inhaled air becomes pure and the respiratory passage is free of dust and micro-organisms. 

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Types of Hygiene: Personal Hygiene
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Chapter 15: Hygiene - [A Key to Healthy Life] - Long answer type [Page 155]

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Selina Concise Biology [English] Class 9 ICSE
Chapter 15 Hygiene - [A Key to Healthy Life]
Long answer type | Q 1.1 | Page 155
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