Answer:
B) "Atherosclerosis is a long process that eventually results in calcification of heart valves."
Answer:
one team attempts to maintain possession
Explanation:
all of the other options are about types of defenses
A would be the correct answer.
Answer:
Hemoglobin
Explanation:
RBCs have their rich red color because of a vitally important iron-containing protein called hemoglobin. The protein picks up oxygen molecules as the blood exchanges gases in the lungs.