Which of the following cause the colors we see to appear brighter or more intense?
a. narrow bands of wavelengths
b. broad bands of wavelengths
c. waves of greater amplitude
d. waves of lower amplitude
c
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Every hazard of adolescence—including car crashes, unsafe sex, and parasuicide—is more common among teens who have
dropped out of school. taken psychoactive drugs. joined youth groups at church. close communications with parents and peers.
A local television station conducts what they refer to as "surveys," in which they ask viewers to call in their opinions to various topics
These "surveys" are not considered a scientific poll because the television station a. does not allow subjects to e-mail their responses. b. is using a biased sample. c. limits the response to only 20 minutes. d. does not separate the responses according to gender or race.