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Apart from statistics, it might be helpful to look at what smoking tobacco does to the human body. Smoke is a mixture of gases, vaporized chemicals, minute particles of ash and other solids. There is also nicotine, which is powerful poison, and black tar. As smoke is breathed in, all those components from deposits on the membranes of the lungs. One point of concentration is where the air tube and bronchus divides. Most lung cancer begins at this point. Filters and low tar tobacco are claimed to make smoking to some extent safer, but they can only slightly reduce, not eliminate the hazards. What is the main idea of the passage Smoking is big hazard to health. There are ways to make smoking safe. Smoking is more hazardous to male smokers than to female smokers. There are many poisonous chemicals in tobacco.
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Smoking is big hazard to health. There are ways to make smoking safe. Smoking is more hazardous to male smokers than to female smokers. There are many poisonous chemicals in tobacco.
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