character: Theodore Roosevelt
topic: National Parks and Wildlife Preservation
grade: 10
subject: Biology
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character: John Muir
topic: Influence on National Parks Development
grade: 10
subject: Biology
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character: Gifford Pinchot
topic: Forest Conservation and Management
grade: 10
subject: Biology
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character: Rachel Carson
topic: Impact on Environmental Awareness and Protection
grade: 10
subject: Biology
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