character: Dr. Sarah Thompson
topic: Volcanology Expert, Understanding Tephra and Its Significance in Volcano Monitoring
grade: 9
subject: Geography
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character: Mr. Dan Reynolds
topic: The Formation of Tephra and Its Role in Eruptions
grade: 9
subject: Geography
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character: Ms. Lisa Chen
topic: Monitoring Volcanoes: Tephra as a Key Indicator
grade: 9
subject: Geography
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character: Professor John Mitchell
topic: Geographic Impact of Tephra Distribution After Eruptions
grade: 9
subject: Geography
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