Why air is warmed before entering into lungs by the nostrils?

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The?lungs?and respiratory system allow oxygen?in the air to?be taken?intothe body, while also enabling the bodyto?get rid of carbon dioxide?in the airbreathed out. ... As?air?is inhaled, the mucous membranes of the?nose?and mouth?warm?and humidify the?air before it enters?the?lungs.
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The air is warmed before enterinv the lungs,because of the presence of mucous membrane in the mouth and nose which humidity and warm the air...
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