A girl is born with all her eggs. They aren't released or usable until she starts menstruation.
Human female bodies produce eggs in the ovaries, produce hormones such as estrogen and progesterone, and are capable of carrying and nourishing a developing fetus during pregnancy.
ovaries
No. The male betta makes the bubble nest, the female lays the eggs, the male fertilizes the eggs and then takes the eggs and places them into the bubbles of the nest. Most often he will then turn and attack the female i still present. The male will then tend to the eggs until hatched making sure to replace any eggs that fall out of their bubbles.
it doesn't because it is not a human. he only needs a bubble nest. female bettas make eggs to be placed into them by the male.
The female turtle will lay the eggs and the male comes along and fertilizes them. The female turtle will lay eggs even if there is no male turtle around.
Put a male and female Pokemon together from the type e.g.Fire(male) Fire(female)=eggs from the female form or give it a taco
male and female mate. female lays an egg(s), eggs hatch into a chick
The female lays her eggs and the male fertilises them.
that is how they build their nests for their eggs to hatch
the female keep the eggs until they hatch
There's no exact age for a girl to produce egg, but i have heard that even when still in the womb the baby girl can produce eggs. So the eggs are there just have not been triggered from the man's sperm.
You must put a female with a male but be sure to separate them after she lays the eggs as the male will kill her. You must be warned though, they produce a LOT of eggs and the females and males must be separated after they get older.