Answers SSCR 26 Biology B The Immune System — Unit testQuestion 20

20

QuizMultiple Choice

The Immune System — Unit test

Question 20 • SSCR 26 Biology B

Which causes a drop in female hormone levels?

Answer

A

the onset of the menstrual flow

B

the release of an egg from the ovary

C

the thickening of the uterine wall

D

the failure of an egg to be fertilized

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