madis40 madis40

21-05-2020
Biology

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which one is a type of barrier

which one is a type of barrier class=

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Shadowmoonwolfcry Shadowmoonwolfcry

21-05-2020

Chemical barrier

Sweat, tears, mucus, and saliva break down and destroy pathogens. There are chemicals in the body excretions that are breaking down pathogens.

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