Which of the following infections has the potential to eventually destroy the immune system?

The upper airway refers to:

A) the space from the bronchi to the alveoli. B) all structures from the larynx to the alveoli. C) the space from the back of the throat to the bronchi. D) all structures from the nose and mouth to the larynx.

The collisions of gas molecules against the wall of a container is called:

A. pressure. B. temperature. C. an inelastic collision. D. volume.