Question

What is mensutruation ?
Why does it occur.​

Answer 1

Hii there

here is your answer

the process in a woman of discharging blood and other material from the lining of the uterus at intervals of about one lunar month from puberty until the menopause, except during pregnancy.

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Answer 2

Answer:

Explanation:

Menstruation is the periodic removal of the inner layer of uterus , unfertilized egg along with blood and mucus.

It occurs when eggs are released in oviduct but no fertiliztion occurs so eggs on reaching uterus simply get thrown out with blood