The answer is that Epithelial cells act as a passageway in which the air moves into the lungs. The epithelial cells in the respiratory system would serve as a leak proof barrier that do transports, filters as well as conditions the air one is breathing.
<span>b. above are correct.</span>
Answer:
sex
Explanation:
when a mommy and daddy love each other very much, they have sex
Answer:
I think about 10 minutes.
Explanation:
Warm up before stretching.
Don't push through pain. ...
Increase your workouts gradually. ...
Don't run more than 45 miles per week. ...
Run on soft, flat surfaces.
Alternate hard training days with easy days.
