C. Helpful variations accumulate among surviving members of a species
Bicarbonate buffer system. Human blood contains large amounts of carbonic acid, which is a weak acid, and bicarbonates, a strong base. If blood pH falls below 6.8 or rises above 7.8, one can become sick or die. This bicarbonate buffer system help maintain blood pH at 7.4. The bicarbonate neutralizes excess acids in the blood while the carbonic acid neutralizes excess bases.
Gene therapy I hope this helps
the importance of this procedure is to get a set of data to compare your other test results to, like when they are active
