The part of the eye that changes its thickness to adjust an image to make it clearer is the________
a. lens c. iris
b. retina d. cornea
A
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During adolescence, the gender differences in self-esteem
a. reveal both statistical significance and practical significance throughout adolescence. b. are relatively large for Black females and males. c. are relatively large for females and males who come from well-educated families. d. are not consistent, and they are not very large.
Many studies have demonstrated that many forms of mental illness, such as schizophrenia, are found
a. mostly in Western cultures b. at an ever increasing rate around the world c. at similar rates around the world d. mostly in industrialized countries
Which of the following is true of a library but not necessarily true of the Internet?
a. Someone other than the author placed the material there. b. All of the material is from nonprofit organizations. c. The material is not controversial. d. All of these are true.
Approximately how many cigarettes does a person have to smoke early in life to increase her or his chance of becoming a habitual smoker?
A. 25, or about 1 pack of cigarettes B. 50, or about 2 packs of cigarettes C. 10 cigarettes D. 1 carton of cigarettes