Chlamydia is a bacterial STD. It can often be treated with a round of antibiotics. Also gonorrhea, it’s like chlamydia in a way. Gonorrhea is caused by bacteria that can usually be treated with antibiotics.
From childhood through adulthood
Answer:
The answer is B, To ensure that blood flows in one direction.
Explanation:
Your valves are there to prevent backwards blood flow and keep your blood moving all in one direction.
The answer to your question is,
Progesterone
-Mabel <3