In the pathway of the flow of blood through the heart, oxygenated blood returns from the lungs and enters the:
a. right atrium.
b. right ventricle.
c. left atrium.
d. left ventricle.

answer:

i don't know

explanation:

sorry

answer:

cry and then a deep breath and breathe. let all your emotions out the way you need to, weather that crying a bunch or screaming do it then breath and remember it'll be okay.

explanation:

Chemotherapy works by stopping or slowing the growth of cancer cells, which grow and divide quickly. It can also harm healthy cells that divide quickly, such as those that line your mouth and intestines or cause your hair to grow. Damage to healthy cells may cause side effects. Chemotherapy kills cells that are in the process of splitting into 2 new cells. Because cancer cells divide much more often than most normal cells, chemotherapy is much more likely to kill them. Some drugs kill dividing cells by damaging the part of the cell's control centre that makes it divide.