character: Dr. Helen Rivers
topic: Hydrologist, Water Quality Assessment Techniques
grade: 12
subject: Geography
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character: Professor James Hudson
topic: Impact of Pollution on Water Resources
grade: 12
subject: Geography
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character: Dr. Sarah Lin
topic: Groundwater Contamination Studies
grade: 12
subject: Geography
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character: Mr. Tom Fischer
topic: Water Quality Monitoring Methods
grade: 12
subject: Geography
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