Biology, asked by wwwvijaykholwal2005, 8 months ago

why does menstruation occur?​

Answers

Answered by hamzarasool308
1

Explanation:

A period happens because of changes in hormones in the body. Hormones are chemical messengers. The ovaries release the female hormones estrogen and progesterone . These hormones cause the lining of the uterus (or womb) to build up.

Answered by vvp8c2021r26
1

Explanation:

Menstruation occurs because during this period the wall of uterus becomes thick to receive the egg. In case it is fertilised and developed this results in pregnancy.

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