C. Answer the following questions in brief.
1. How does our nasal cavity protects us from dust?
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Explanation:
If it goes in the nostrils (also called nares), the air is warmed and humidified. Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
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