character: Rachel Carson
topic: Environmental Toxicology
grade: 11
subject: Chemistry
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character: Silent Spring
topic: Impact of Chemicals on Environment
grade: 11
subject: Chemistry
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character: Pesticides
topic: Toxicology and Environmental Impact
grade: 11
subject: Chemistry
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character: Biomagnification
topic: Chemical Accumulation in Food Chains
grade: 11
subject: Chemistry
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