Question

$define \: \underline\mathcal\purple{chemical \: barrier}\: of \: chapter \: chemical \: \\ kinetics \: in \: simplest \: word \: u \: can \: dont \: copy \: from \: \\ google \: write \: in \: points \: to \: get \: brainlist \: from \: me$
$\star\green{good night}$
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Answer 1

a barrier which destroys pathogens on the body surface at body opening and in body surface and please mark it as brainliest

Answer 2

Answer:

chemical barriers means the extra energy which is activation energy is the limiting factors of the rate of reaction.

hope it make sense....