B. because they are not manufactured by the body
<span>Atherosclerosis is the general term for narrowing and hardening of the arteries due to plaque buildup. When this occurs in the vessels that supply the heart, it is termed coronary artery disease, or coronary heat disease.</span>
Answer:
What goes up must come down
Explanation:
Whenever we jump up or throw a ball in the air, we(or the ball) always come back down to the Earth because of the Earth's gravity.
