One of the dramatic changes in the United States today is the increase in

a. the homogeneity of the population
b. blue-collar workers
c. manufacturing and heavy industry
d. the diversity of the population

D

Psychology

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The presence of all visible wavelengths of the visible spectrum gives the sensation of __________

a) blue. b) green. c) brown. d) white.

Psychology

The studyof ________ demonstrates that it is difficult for psychologyto be a science

A) mental illness B) overt behaviors C) animal behavior D) dreams

Psychology