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Health: Personal and Social — BIOLOGY STD 9 — Question

ICSE BoardEnglish MediumSTD 9BIOLOGYHealth: Personal and Social2 Marks
Question
Explain the following: We should breathe through our nose only.
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Answer

Nose has hair and mucus to filter the air coming through it while breathing. This traps dust, germs and other foreign particles and prevents them from reaching the lungs. Hence we should always breathe through nose.

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