A period, or menstruation, is the shedding of the endometrium - the uterine lining. Menstruation is also known as menses. All female humans, as well as some other female mammals, have regular periods during their reproductive age.
The starting AND ending of your periods. :)
rows. the vertical columns are called periods
7 periods
No - only mammals have periods.
the periods are the rows
periods, they are periods
they dont have periods.
Periods have same shells. There are 7 periods in periodic table.
The main dinosaur periods were the Triassic, Jurassic and Cretaceous periods. they were in the mesozoic era. there were other periods before dinosaurs like the carboniferous.
The horizontal rows are known as periods.
there are 7 periods in the periodic table118
Yes Vampires have periods. Even though they are dead creatures they do have periods. It may come as a shock but all vampired have periods even males.