The body's response to a viral infection is to A) send more blood through the kidneys to filter out the virus.

B)increase the secretion of enzymes to digest the virus.

C)produce additional white blood cells to kill the virus.

D)increase fluid intake to flush the virus out.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

the answer to your question is:

c. complementary base-pairing