character: Rachel Carson
topic: Silent Spring and the Birth of Modern Environmentalism
grade: 9
subject: Geography
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character: John Muir
topic: The Conservation Movement
grade: 9
subject: Geography
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character: Aldo Leopold
topic: Land Ethic and Environmental Awareness
grade: 9
subject: Geography
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character: David Brower
topic: Modern Environmental Activism
grade: 9
subject: Geography
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