do you know?? biology?

[mizz]

1.Which statement accurately describes an aspect of human reproduction?
A male is born with all of the sperm cells he will produce in his lifetime.

Ovaries continually produce new egg cells throughout a female’s lifetime.

An adult female usually releases an egg from an ovary each month.



2. During which stage of the human life cycle does the body go through a series of changes to prepare for sexual reproduction?
infancy

childhood

adolescence

adulthood



3. Which structure separates the blood systems of mother and fetus, and also nourishes the fetus and removes waste products from fetal blood?
umbilical cord

placenta

amniotic sac

uterus