do cigarettes contain carbon dioxide thousands of chemicals—over 7,000 have been identified—many of which are toxic, and at least 70 are known to cause cancer. 🚭 When a cigarette burns, these chemicals are inhaled deep NOVA Online | Search for
NOVA Online Search for a Safe Cigarette Anatomy of a Cigarette (nonFlash) Effects of smoking on lungs Tobacco and the environment What Does Your Garage and a Cigarette Have in Common? American Lung Association What's in a cigarette? Lung Cancer Kilts Research Cures! How cigarette smoke skews immune responses to promote infection, lung disease and cancer Nature Reviews Immunology
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