character: Alfred Wegener
topic: Supercontinent theory and Continental Drift
grade: 10
subject: Geography
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character: Sir Arthur Holmes
topic: Geological Time Scale and Continental Drift Evidence
grade: 10
subject: Geography
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character: Harry Hess
topic: Seafloor Spreading and Plate Tectonics
grade: 10
subject: Geography
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character: Robert Simeon
topic: Pangaea and Modern Continental Fit
grade: 10
subject: Geography
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