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Why does cold air need to be warmed by the nasal cavity and the
sinuses?
O To increase the pressure of air in the lungs.
O To protect the alveoli from being damaged.
O To help prevent pain when breathing in the air.
To make it easier to filter out pathogens.
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Answer:

C - To help prevent pain when breathing in the air.

Explanation:

When you are breathing in cold air it can cause the upper air ways to narrow making it harder and pain full to breathe when it is warmed it can relax it make it easier to breathe.

Hope this helps!

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