Saturation of light is to ____, as amplitude of light is to ____

a. ?brightness; color
b. ?purity; hue
c. ?density; clarity
d. ?purity; brightness

ANSWER:
d

Psychology

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Which of the following physical events occurs during REM sleep?

a. Breathing becomes rapid and irregular b. Muscular tension increases as dream activity becomes more intense c. Heart rate decreases d. Eyes begin darting around behind the eyelids once or twice each hour

Psychology

Which of the following is true regarding the life expectancies of African Americans and White Americans by age 75?

A) African Americans will live longer than White Americans. B) Their life expectancies will be essentially equivalent. C) White Americans will live longer than African Americans. D) There is not enough data on this age group to know.

Psychology