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In-s [12.5K]
3 years ago
10

Select the answer below that best describes how the lungs are kept free of germs and dirt from the air

Biology
2 answers:
mylen [45]3 years ago
5 0

Answer:

The Alveolar macrophages, Cilia and the mucus layer

Explanation:

tangare [24]3 years ago
4 0
The Alveolar macrophages, Cilia and the mucus layer
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