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yncr yncr
wrote...
6 years ago
A sunscreen with an SPF of 30 protects the skin from ________ of ultraviolet B radiation.
 
  A) 85 B) 90 C) 93 D) 97
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DadaDada
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6 years ago
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6 years ago
Smart ... Thanks!
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Helped a lot
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2 hours ago
this is exactly what I needed
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