Answer: By us people breathing in oxygen and breathing out carbon dioxide.
The skin functions as a barrier to prevent the entry of microorganisms.
According to the question, the amount of the drug administered is 250 milligram (mg). The available dose of the drug is 250 mg per 1.5 mL (milligram). So, for the administration of the 250 mg drug, 1.5 mL of the available drug concentration should be used.
We need to determine the amount of the drug must be drawn in cc (cubic centimeter).
As
So, the amount to be drawn is 1.5 cc.
They come from crementation which is when disolved minerals are deposited in tiny spaces...