12-04-2017
Health

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Which is one of the body's natural barriers against pathogens? A. mucous membranes B. tears C. skin D. all of the above

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jg3171539 jg3171539

12-04-2017

the correct choice is D

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masonlawiii masonlawiii

12-04-2017

The answer is A) Mucous membranes, and C) the skin

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