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iren [92.7K]
4 years ago
9

What is the menstrual cycle and how long does it last?

Biology
1 answer:
Usimov [2.4K]4 years ago
4 0
A menstrual cycle is a girl's "time of the month" or "hell week" and it comes every month.
it lasts about an average of one week, but sometimes longer. 

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