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kati45 [8]
3 years ago
9

Although estrogen is primarily produced by ovaries, it is also produced by the adrenal glands and in fat tissue. loss of the nor

mal amount of fat lowers the level of estrogen so that the menstrual cycle and ovulation stops. female olympic athletes who train severely often shut off their cycles. what would be a reasonable evolutionary cause of this shutdown?
Biology
1 answer:
Hoochie [10]3 years ago
6 0
When the cells are provided with oxygen
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