character: Dr. Sarah Thompson
topic: Ecotoxicologist's Role in Assessing Pollution
grade: 12
subject: Geography
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character: Dr. Emily Carter
topic: Impact of Heavy Metals on Aquatic Ecosystems
grade: 12
subject: Geography
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character: Mr. James Russell
topic: The Effects of Agricultural Runoff on Water Quality
grade: 12
subject: Geography
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character: Dr. Lisa Nguyen
topic: Role of Soil Quality in Ecosystem Health
grade: 12
subject: Geography
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