The answer is 10 billion. <span />
Answer: yes tell me a joke
Explanation:
Eat healther foods, exercise more often . Dont smoke
I think you mean sperm cell. It is called fertilization.
Answer: The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.