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hockeyguy9 hockeyguy9
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6 years ago
The ultraviolet index
 
  A) estimates the amount of melanin produced by skin cells.
  B) predicts the next day's ultraviolet radiation levels throughout the United States.
  C) indicates how much sunscreen to wear.
  D) reports previous ultraviolet radiation levels throughout the United States.
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psycho22psycho22
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6 years ago
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