Answer:
D) a scientific journal about chemistry and a biography of a famous chemist
<span>Proliferation of lymphocytes occurs immediately after activation, as well as the encounter of antigen. First, these antigen are bound, after which activation begins. Activation immediately leads to proliferation, as well as differentiation. Proliferation is an increase in the number of something, in this case, in the number of lymphocytes, or white blood cells. </span>
The common passageway shared by the respiratory and digestive system is the pharynx
I believe the answer is A, Cholesterol.
