Ultra-violet rays from the sun. They cause skin cancer, sunburn, and more.
What causes most serious skin conditions?
the sun.
Reply:probably exposure to a nuclear blast.
i wouldn't worry about my skin though, if i was around an explosion like that.
Reply:The sun
Reply:Genes play a big part. Sunlight can cause cancer. Be specific. Try www.intelihealth.com
street fighting
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