Answer:
The smallest bronchioles end in tiny air sacs, called alveoli. They inflate when a person inhales and deflate when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream.
Explanation:
Answer:
For the first one, id pick all of them
the second one is C
:) have a nice dayyyyy
Answer:
Illness
Explanation:
My mom helped me. Ps. she's a teacher
