character: Alfred Wegener
topic: Continental Drift Theory
grade: 10
subject: Geography
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character: Harry Hess
topic: Seafloor Spreading
grade: 10
subject: Geography
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character: Wegener's contemporaries
topic: Reaction to Continental Drift
grade: 10
subject: Geography
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character: Scientific Community
topic: Acceptance of Pangaea Concept
grade: 10
subject: Geography
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