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Information about the insecticide DDT, a toxic chemical that was used widely in World War II and later, and is still used in some countries today. It has had far-reaching effects on the environment, as it is carried long distances by air and water, and persists in food chains. (Updated: March 14, 2012)
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- Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)