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Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities.
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A
True
💡 Explanation:
The nasal cavity performs all three functions described: warming cold air through rich blood supply, cooling hot air through evaporation of mucus, and filtering impurities through nasal hairs and mucus. This conditioning is essential for protecting the lungs and optimizing gas exchange in the respiratory system.