A large section of the lower troposphere with uniform temperature and humidity is called . A. a hurricane

B. a hemisphere

C. a pressure gradient

D. an air mass

Idk i think the answer choice is number 1

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.

Self-reports would be the answer.