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The skin functions as part of the ______ system because it provides a physical barrier that prevents microorganisms from entering the body.

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Answer:

immune system

Step-by-step explanation:

Immune system protects us from pathogen and harmful organisms that enter our body. Skin is the largest organ in our body and covers every inch of us thus it prevents pathogens from directly entering our organs or body acting as a part of immune system.

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