C) the lungs.
The air moves down the trachea and into the lungs where it is picked up by the blood
Skin muscle etc.yk look it up too :()
Answer:
is =A
Explanation:
this is not associated with proteins I just took that quiz and got 100%
I believe the answer would be B.
Answer:
d) do all jobs for survival
Explanation:
A single cell perform all its activity on its own.
