character: Rachel Carson
topic: Silent Spring and the impact of pesticides on the environment
grade: 12
subject: Biology
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character: Dr. John E. Haller
topic: Historical context of pesticide use and environmental concerns
grade: 12
subject: Biology
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character: Environmental scientists
topic: Research on pesticide toxicity and ecosystem effects
grade: 12
subject: Biology
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character: Agricultural policymakers
topic: Regulations and responses to pesticide use following Silent Spring
grade: 12
subject: Biology
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