Biology, asked by sahil9055, 10 months ago

why does menstruation occur??

Answers

Answered by aurorasweetpea610
25

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.


aurorasweetpea610: your welcome
Answered by Anonymous
12
menstruation occurs when the ova is not fertilised in females.
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