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6. What is the function of the menstrual cycle?
a. prevent ovulation
b. destroy unfertilized eggs
c. prepare the body for pregnancy
d. ready the vagina for fertilization

7. What is the easiest way to prevent urinary tract infection?
a. Take vitamins everyday.
b. Sleep 8 to 10 hours everyday.
c. Drink 8 to 10 glasses of water a day.
d. Drink fruit juices and soda everyday.​