character: John Muir
topic: Advocate for environmental preservation and opponent of the Hetch Hetchy dam project.
grade: 11
subject: Geography
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character: Gifford Pinchot
topic: Proponent of resource management and supporter of the Hetch Hetchy water supply project.
grade: 11
subject: Geography
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character: Theodore Roosevelt
topic: President who influenced the conservation movement and expressed interest in both water supply and preservation.
grade: 11
subject: Geography
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character: Richard H. Levi
topic: Skeptic of the necessity of the Hetch Hetchy water supply in favor of conservation.
grade: 11
subject: Geography
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