Menstruation occurs
a) after fertilization
b) when the ovum pairs to get fertilized
c) when the ovaries stop producing ova
d) whenever on ovary produces an ovum
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Menstruation occurs
a) after fertilization
b) when the ovum pairs to get fertilized
c) when the ovaries stop producing ova
d) whenever on ovary produces an ovum
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Answer:
The fertilized egg attaches to the lining of the uterus. The placenta then develops. The placenta transfers nutrition and oxygen to the fetus from mother. If the egg does not become fertilized, the lining of the uterus (endometrium) is shed during menstruation
Explanation:
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Answer:
a-after fertilization