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glisten glisten
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7 years ago
When a female has low levels of estrogen and progesterone, ________.
A) her uterus is ready to accept an embryo
B) she is menstruating
C) she is pregnant
D) she is ovulating
Textbook 
Biology of Humans: Concepts, Applications, and Issues

Biology of Humans: Concepts, Applications, and Issues


Edition: 5th
Authors:
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R.FrantR.Frant
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7 years ago
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glisten Author
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7 years ago
Smart ... Thanks!
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Yesterday
Thanks for your help!!
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2 hours ago
Helped a lot
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