character: Marie Tharp
topic: Mapping Ocean Floor Topography
grade: 9
subject: Geography
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character: Sylvia Earle
topic: Ocean Exploration and Conservation
grade: 9
subject: Geography
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character: Jacques Cousteau
topic: Marine Biology and Oceanography
grade: 9
subject: Geography
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character: Alfred Wegener
topic: Plate Tectonics and Continental Drift
grade: 9
subject: Geography
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