why are cigarettes bad is smoking Smoking how is smoking cigarettes bad
Description
The figure depicts the major established pathways of cancer causation by cigarette smoking: (1) the exposure to carcinogens (cancer-causing substances), (2) the formation of covalent bonds between the carcinogens and DNA (DNA adduct formation), and (3) the resulting accumulation of permanent somatic mutations in critical genes (genes appear in italics)
In Sweden, a startup has trained the local wild crows to pick up cigarette butts that have been littered around the city.
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Download this stock image: Black woman smoking, London, UK
