character: Environmental Scientist
topic: Tephra Deposits and Soil Composition
grade: 9
subject: Geography
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character: Geographer
topic: Impact of Volcanic Ash on Soil Fertility
grade: 9
subject: Geography
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character: Soil Scientist
topic: Analysis of Soil Layers in Tephra Fields
grade: 9
subject: Geography
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character: Geologist
topic: Formation and Characteristics of Tephra Deposits
grade: 9
subject: Geography
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