character: Theodore Roosevelt
topic: Conservation Efforts and National Parks
grade: 9
subject: Biology
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character: John Muir
topic: Influence on Roosevelt's Conservation Policies
grade: 9
subject: Biology
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character: Gifford Pinchot
topic: Forestry and Conservation Leadership
grade: 9
subject: Biology
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character: William Howard Taft
topic: Continued Conservation Efforts in National Parks
grade: 9
subject: Biology
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