Biology, asked by kushal3865, 11 months ago

Why does menstruation occur?

Plz its urgent tommorow is my exam plz

Answers

Answered by sandipan132006

Answer:

because ovum becomes dead after a period of time and a dead thing has to be removed

Answered by amritaj048

The menstrual cycle occurs due to the rise and fall of hormones. This cycle results in the thickening of the lining of the uterus, and the growth of an egg, (which is required for pregnancy). ... If pregnancy does not occur, the lining is released in what is known as menstruation.

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