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1.D   2.Infaret light waves the bottom answer is Wavelength and frequency are two such characteristics. The relationship between wavelength and frequency is that the frequency of a wave multiplied by its wavelength gives the speed of the wave, as we will see below. That's all I know. Hopwfully it helps.

carliepaige06
1-c 2-d 3-p 4-a 5-c 6-d 7-t 8-d ~i’m in 8th grade and just finished this stuff soo ik i’m right.~

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