Help plz

b

Explanation:

i think it's b cause meiosis gives four unique daughter cells, each of which has half the number of chromosomes as the parent cell.

b - the respond is innate and varies over time.

good luck!

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.