character: Dr. Alan Hayes
topic: Volcanic Activity and Plate Tectonics
grade: 12
subject: Geography
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character: Dr. Marie Tharp
topic: Ocean Floor Mapping and Plate Boundaries
grade: 12
subject: Geography
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character: Dr. Richard Gordon
topic: Plate Tectonics and Earthquakes
grade: 12
subject: Geography
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character: Dr. Carla F. L. DeMello
topic: Volcanic Eruptions and Their Impact on Geography
grade: 12
subject: Geography
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