allycat66 allycat66

11-04-2017
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human skin contains melanin.melanin helps protect the skin from which environmental factor?

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Katieisawesome Katieisawesome

11-04-2017

melanin helps protect the skin from the uv radiation from the sun and also helps keep germs and diseases from entering the body.

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ryleemadison01 ryleemadison01

11-04-2017

UV radiation or like sunlight

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