tobacco tar in lungs A smoker's become black and filled with tar. Learn more the #tobaccoatlas http://t.co/DQiH1O1WsP Biology Notes for A level:
Biology Notes for A level: #53 Summary of Smoking The image of blackened lungs isn't a prop. It's the harsh reality of smoking. While healthy lungs are a pinkish color, cigarette smoke causes permanent, heavy staining from tar and other particulate Smoking and COPD UF Health Smokers vs Normal Lungs: How Smoking Damages Lung Health
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