Smoking is the inhalation and exhalation of the smoke of burning tobacco. Tobacco leaves are smoked in a variety of ways. They first go through a drying and curing process, and then may be made into cigars or smoking pipes. The most popular method of smoking is by cigarettes, which are made of thinly shredded tobacco rolled in a light paper. Historically, it was thought that smoking was harmless, but more modern clinical and laboratory …
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