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BJ BJ
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6 years ago
The spectrum of ________ is divided into three bands: A, B, and C.
 
  A) ultraviolet radiation B) melanin
  C) infrared rays D) altitude
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mojin39mojin39
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6 years ago
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BJ Author
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6 years ago
Good timing, thanks!
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Yesterday
Thanks
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2 hours ago
Helped a lot
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