Question

what is menstruation​

Answer 1

Answer:

Menstruation, also known as a period or monthly,is the regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina.The first period usually begins between twelve and fifteen years of age, a point in time known as menarche

Answer 2

Answer:

it is a cycle of 28 day in female of primates. during this cycle changes is occurs inside uterus