A it refers to the speed of the conversion to substrate
It relates to the meaning of the pores of skin because it lets in and out only certain things.
I hope this helps, Sweetie.
Liver problems. Failing liver. Something with the hippocampus getting smaller, which will cause your memory to leave you.
You are likely to see a connotation used in both advertisement and also some university lectures. If only one answer is permitted, B is the best answer.
