character: Dr. Emily Carter
topic: The Impact of Soil Composition on Ecosystem Health
grade: 9
subject: Geography
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character: Dr. Lisa Anderson
topic: Soil Types and Their Role in Biodiversity
grade: 9
subject: Geography
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character: Professor Mark Reynolds
topic: Effects of Soil Erosion on Plant Life
grade: 9
subject: Geography
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character: Dr. Sarah Thompson
topic: The Relationship Between Soil pH and Ecosystem Balance
grade: 9
subject: Geography
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