The answer is A. Epiglottis
Answer:
place it over the nose,mouth and chin. Fit the flexible nose piece over the bridge of the nose. Secure it on the head with the ties
Explanation:
There is less transport of materials across membrane saturated differentials. The cell will have less readily energy to transport waste, etc across the chemical gradient.
Because it is not good for you
1.5x3=4.5 mg total
hope this helps