character: Ms. Rivera
topic: The History of Plate Tectonics Theory
grade: 10
subject: Geography
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character: Dr. Alfred Wegener
topic: Continental Drift Theory
grade: 10
subject: Geography
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character: Henry Hess
topic: Seafloor Spreading
grade: 10
subject: Geography
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character: Arthur Holmes
topic: Convection Currents in the Mantle
grade: 10
subject: Geography
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