Which of the following is probably the most serious disadvantage of oral contraceptives for most women?
A. They provide no protection against STDs.
B. They cause symptoms of early pregnancy.
C. They cause vaginal bleeding (spotting) between periods.
D. They are likely to cause acne.
A. They provide no protection against STDs.
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You can conserve energy by doing all of the following, except
A. cutting back on driving. B. making sure your home is well-insulated. C. planting and caring for trees. D. using fluorescent tubes for lighting.
Sewage contains primarily
A. human feces. B. heavy metals. C. paper waste. D. radioactive waste.
Cytotoxic cells perform which of the following functions?
A. Suppress the immune response. B. Aid in the destruction of infected cells. C. Stimulate the immune response. D. Suppress B cells
Requiring students to stand on a specific spot in their squad line is one method for motivating students to dress for activity quickly
Indicate whether the statement is true or false