can anyone explain briefly menstrual cycle
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menstrual cycle begins at the age of 12 onwards and it occurs every 28 days it occurs because the uterus collects or stores blood for the development of foetus if fertilization doesn't takes place then menstruation happens
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Answer:
it is the process where the preparation is done for the embryo to grow.
but when fertilization doesn't take place the wall created starts to repnalish and it that is menstrual cycle.
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