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alexandr402 [8]
4 years ago
15

How do the body’s exterior lines of defense prevent illness? (7th grade Science)

Biology
1 answer:
wel4 years ago
5 0

Answer:

A

Explanation:

they prevent pathogens from entering the body because the human skin is made of a tough layer and is difficult to be penetrated by organisms. Even the mucous membrane (lines the digestive tract and respiratory tract) prevent pathogens from entering the body.

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