Answer:
Explanation:
These are arteries, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
<span> B.a medical condition that may occur due to a chemical imbalance in the brain</span>
Answer: It depends on how well you care for it, and yes you can have a second one done but either way it takes time.
Explanation:
Saliva, blood, having Intercourse with some with HIV
