Answer:
It is thin tissue that lines the alveoli
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It is like a barrier, or wall. It helps infection and bacteria stay out. It can also help you indicate whether you are getting infection in the inside of your body. if you're skin is inflamed, that is a sign of disease or infection.
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Brainliest answer is always appreciated!<span />
The first questions answer is a community.
The second questions answer is a desert.
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Scanning electron microscope is the answer.This type of microscope<span> is an instrument for observing at the atomic leve</span>
