| http://www.w3.org/ns/prov#value | - Since then, modern research methods have provided evidence of this link; and while there are thousands of chemicals in the tobacco plant (and he is not even including those added by cigarette manufacturers), it is one -- nicotine -- that produces the good feelings that keep users coming back for more.Tobacco is a member of the deadly nightshade (or belladonna) family of flowering plants, a family
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