• Tobacco contains nicotine, carbohydrates and proteins, minerals (some toxic heavy metals) and radioactive elements.
• Its combustion gives CO, HCN, NO/NO₂, NH₃, tar, and thousands of other chemicals.
• Harm lungs (tar, emphysema, cancer), heart and blood (CO, nicotine), nerves, fertility, immunity, and addiction.
• Smoking pollutes air (CO₂), water and soil (butts).
• Types traditional and vaping; exposure: active and passive.
• Prevention begins with a personal decision and a supportive environment.
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Test yourself on this lesson

• The lesson’s question bank is split across the points above; each point has its own questions underneath.
• To work through the whole bank on one page: