Visible light is made up of electromagnetic radiation with wavelengths of
a. 400-700 nanometers. b. 20 to 20,000 C.P.S.
c. 300-800 decibels.
d. 20 to 20,000 hectometers.
ANSWER: a
Psychology
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a) secondary sexual characteristics b) sex chromosomes c) primary sexual characteristics d) gender
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