rorarivera2000 rorarivera2000

02-06-2016
Biology

contestada

All of the following prevent pathogens from entering the human body except
a. red blood cells
b. tears
c. mucus
d. skin

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HaiHayley HaiHayley

02-06-2016

A. red blood cells. They carry oxygen around the body, not protect from pathogens.

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