Answers

2014-06-21T11:26:33+05:30
 menstrual cycle is the recurring cycle in which the endometriallining of the uterus prepares for pregnancy.
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  • Brainly User
2014-06-21T11:26:59+05:30
The process happen every month with women and teenage girls of ovulation and mensuration.
the thick wall of blood vessel is created every month to to mature to nurish baby while pregnancy . When it doesn't get mature so blood wall falls from vigina . 
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