During a natural menstrual cycle, estrogen levels ______.

A. are fairly constant
B. are low except during the luteal phase
C. peak during menstruation
D. peak twice, once before ovulation and once in the luteal phase


D. peak twice, once before ovulation and once in the luteal phase

History

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What role did blacks have in the southern governments established under congressional Reconstruction?

A) There were no black governors and only two black senators. B) Blacks held most of the political offices. C) Blacks formed a majority in most of the state legislatures. D) Blacks rarely filled any important positions in state government. E) Blacks dominated the ranks of the opposition Democratic party.

History

The key figure in the spread of Christianity outside the Jewish community was

A. Peter. B. Paul of Tarsus. C. Jesus. D. Mark. E. Joseph of Arimethea.

History

The November 1917 revolution in Russia brought the ____ to power

a. Mensheviks b. Bolsheviks c. Liberals d. Conservatives e. Tsars

History

All of the following were presidents in the late 1800s except

a. Chester A. Arthur. b. James G. Blaine. c. Grover Cleveland. d. Rutherford B. Hayes. e. James Garfield.

History