character: Rachel Carson
topic: Silent Spring and Environmental Impact of DDT
grade: 12
subject: Biology
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character: CDC
topic: Health Effects of DDT Exposure
grade: 12
subject: Biology
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character: EPA
topic: Regulation of DDT and Pesticide Use
grade: 12
subject: Biology
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character: World Health Organization
topic: DDT and Vector Control in Public Health
grade: 12
subject: Biology
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