A short period of time, after the onset of puberty. The first mature eggs starts to be released from the ovaries during menstruation. Menstruation may first occur during the start of puberty in women, it may start as early as 8 years old and can start late as 16 years old. Menstruation is the process wherein not fertilized eggs are being broken down and released from the body.

7 0

3 years ago

When was the first time a scientist has used fruit flies to study DNA?

Nitella [24]

Answer:

I think it was Thomas Hunt Morgan

8 0

3 years ago

Darwin noticed the beak of finches on each Galapagos Island were slightly different and matched the food found on each island. T

andrew-mc [135]

Biogeography makes the most sense

3 0

3 years ago