what do you mean by periods of a lady
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Mensuration
Uterus prepares to recieve the fertilised egg. It becomes thick and spongy. When fertilisation does not occur this lining come out of the body as blood and mucus. This is known as menstruation.
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Uterus prepares to recieve the fertilised egg. It becomes thick and spongy. When fertilisation does not occur this lining come out of the body as blood and mucus. This is known as menstruation.
Plz mark as brainliest if u found it helpful
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