Answer:
by moistening, heating, and purifying air as it proceeds down the airways
Explanation:
The upper respiratory system support good health by moistening, heating, and purifying air as it proceeds down the airways.
<span>The answer is A. Providing better health facilities to underdeveloped countries. Why? Because by providing health and care to underdeveloped countries, one can help contain outbreaks and contamination among populations which indirectly impacts the home nation. Successful examples of this are the Poliovirus and how it was contained.</span>
I say Counseling. Let me know if I’m wrong!
