character: Mr. Alan Brown
topic: Biological Indicators of Water Quality and pH Balance
grade: 12
subject: Chemistry
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character: Dr. Lisa Smith
topic: Impact of pH on Aquatic Life
grade: 12
subject: Chemistry
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character: Prof. John Doe
topic: Chemical Tests for Water Quality Assessment
grade: 12
subject: Chemistry
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character: Ms. Emily Johnson
topic: Role of Microorganisms in Water Quality Monitoring
grade: 12
subject: Chemistry
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