Question

Air from the outside is:



warmed, dried and cleaned by the nose and mouth

cooled, dried and cleaned by the nose and mouth

cooled, moistened and cleaned by the nose and mouth

warmed, moistened and cleaned by the nose and mouth

Answer 1

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Answer 2

Hairs in the nose clean the air of foreign particles. As air moves through the nasal passages, it is warmed and humidified before it goes into the lungs.