They are transmitted through having sex
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.
The basis for physical fitness is having a good eating habit, which means to know what you are eating and to eat cleanly. Exercise at least an hour every day and drink plenty of water throughout the day.
B. Employees of large companies do not generally have a choice of different health plans
