Site author Richard Steane
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The BioTopics website gives access to interactive resource material, developed to support the
learning and teaching of Biology at a variety of levels.
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Chemical substance | Effect on the body |
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nicotine | damages heart, blood vessels, nerves |
tar | causes cancer |
carbon monoxide | stops haemoglobin in blood carrying oxygen |
hydrogen cyanide | irritate lungs and air passages |
ammonia | irritate lungs and air passages |
butane | irritate lungs and air passages |