dani4klapagee dani4klapagee

22-10-2016
Health

contestada

The first line of defense for keeping pathogens out of the body is the _____.
a. skin
b. antibodies
c. immune system
d. white blood cells

Respuesta :

coastermosterow85yi coastermosterow85yi

16-01-2018

The Answer to this problem would be "A" Skin☺

Answer Link

tieganpickell tieganpickell

07-12-2018

I just took the test and the answer is A

Answer Link

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