Biology, asked by IITdreamer, 1 year ago

what are periods why do they occur. how do they occur

Answers

Answered by sbroshansatya

0

hey...
dude..
see..
here...

yur answer....

see , when ovum remain unfertilized then,uterus wall endometrium breaks and come out with dirty blood and mucus .. through vagina... is known as menstruation ( periods) .

it occurr once in a month....

hope it helps dude
.........

plz mark as brain list

regards ....

Roshan....

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