character: Dr. Lisa White
topic: Water Quality and Nutrient Management Strategies
grade: 12
subject: Chemistry
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character: Dr. John Smith
topic: Environmental Impacts of Agricultural Practices
grade: 12
subject: Chemistry
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character: Ms. Emily Johnson
topic: Chemical Analysis in Water Treatment
grade: 12
subject: Chemistry
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character: Dr. Michael Green
topic: Innovative Solutions for Clean Water
grade: 12
subject: Chemistry
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