In the respiratory system, epithelial cells remove carbon dioxide from the body. act as a passageway by which air moves into the lungs. secrete fluids that protect the inside of the trachea. transfer oxygen to the cells in the body.

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.

This is a pretty on point question because all we need to do is replace 's' in the equation with '35'.the calculation will be9.95 + 0.30s = c9.95 + 0.30 (35) = c9.95 + 10.5  = cc = 20.45

Primary effectit is the most accurate.