character: Rachel Carson
topic: Influence of geological surveys on environmental policy
grade: 9
subject: History
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character: John Wesley Powell
topic: Impact of geological surveys on water management policies
grade: 9
subject: History
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character: Gifford Pinchot
topic: Role of geological surveys in the development of conservation policies
grade: 9
subject: History
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character: Alfred Wegener
topic: Geological perspectives influencing environmental protection movements
grade: 9
subject: History
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