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Ghil Ghil
wrote...
Posts: 393
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6 years ago
The primary cause of skin cancer is __________.
a. ultraviolet B radiation
b. ultraviolet A radiation
c. a combination of ultraviolet A and ultraviolet B radiation
d. photochemical smog
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CavenCaven
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Posts: 1310
6 years ago
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Ghil Author
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5 years ago
Thank you
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