explain mesturation cycle.?
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when the egg is not fertilized the thick layer in the uterus breaks down and comes out in the form of blood and mucus and this is known a menstural cycle and the process is known as mensturation . due to this the placenta will not be formed.
kalimullah:
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**Heyy mate here's ur answer-----**
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The menstrual cycle is the regular natural change that occurs in the female reproductive system..The menstrual cycle is governed by hormonal changes
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