The number of American teenage births is considerably lower than it was 50 years ago because
A) nearly one-third of U.S. teen pregnancies end in abortion.
B) fewer teens are having sex.
C) 90 percent of sexually active teens use contraceptives.
D) most schools offer effective sex education.
A
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Suppose that some female and male high school teachers are discussing marriage in the lounge. Assuming that these people are representative of their genders—and their self-reports are honest—what would we be likely to find?
a. The women would be happier with their marriages than the men. b. Those who had been married about 15 to 25 years would be the happiest, no matter whether they are men or women. c. Newlyweds would be the least happy, no matter whether they are men or women. d. The women whose children had left home would be somewhat happier than those whose children still live at home.
Various types of ____ cells refine the input to ganglion cells, enabling them to respond specifically to shapes, movement, or other visual features
a. receptors b. geniculate cells c. amacrine cells d. optic nerves