more or less clamor i t miners asthma, silicosis, pneumonoultramicroscopicsilicovolcanoconiosis, coal workers pneumoconiosis, or black lung. However, they ar all dust diseases with the same symptoms. Only the smallest particles of the coal dust make it past the nose, mouth, and throat into the alveoli found dark in the lungs. The alveoli, or air sacs, ar responsible for exchanging gases with the blood, and are lo...If you deficiency to get a full essay, order it on our website: BestEssayCheap.com
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