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How Crime is Detected and Prevented
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| Submitted: Wed Aug 20 2003
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How Crime is Detected and Prevented In this essay I will describe and explain how different methods are used to detect and prevent crimes. The different types are Alcohol, Arson, Ballistics, Blood, Documents, Drugs, Explosives, Fibres, Fingerprints, Footprints, Glass, Hair, Paint, Plastic, Pollen, Soil and finally Teeth. ALCOHOL: When a person is suspected of being under the influence of alcohol, the police can test them with different types of machines. These machines are called breathalysers. The Lion Alcolmeter S-L12 is the most common of these. These machines test the breath for traces of alcohol. If the suspect tests positive, they will be detained until they are cleared. Other ways of detecting alcohol on a person are physical tests. The police will ask the suspect to perform certain actions such as walking in a straight line and following a finger with there eyes. ARSON: When the forensic gets to the...
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