character: Alfred Wegener
topic: Continental Drift and Initial Support for Plate Tectonics
grade: 9
subject: Science
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character: Harry Hess
topic: Seafloor Spreading and its Role in Plate Tectonics
grade: 9
subject: Science
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character: Robert Sutherland
topic: Geological Evidence Supporting Plate Tectonics
grade: 9
subject: Science
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character: John Tuzo Wilson
topic: Theory of Plate Tectonics and Transform Boundaries
grade: 9
subject: Science
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