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>As soon as vicki wakes up in the morning, she experiences an intense desire to drink a cup of coffee. this desire is called</span> craving.
I would say D but i am not to sure. sorry if you get this wrong.
Root vegtebles are a good source of calcium
jope this helped:)