character: Wildlife Biologist
topic: Consequences of DDT on Terrestrial Ecosystems
grade: 12
subject: Biology
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character: Rachel Carson
topic: Impact of Pesticides on Wildlife
grade: 12
subject: Biology
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character: Ecologist
topic: DDT and Food Chain Disruption
grade: 12
subject: Biology
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character: Environmental Scientist
topic: Long-term Effects of DDT on Biodiversity
grade: 12
subject: Biology
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