character: Dr. John Smith
topic: Understanding Water Quality: Methods and Technologies
grade: 11
subject: Chemistry
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character: Professor Jane Doe
topic: Chemical Analysis of Water Samples
grade: 11
subject: Chemistry
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character: Dr. Emily Brown
topic: Impact of Pollution on Water Quality
grade: 11
subject: Chemistry
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character: Mr. Alan Green
topic: Innovative Technologies for Water Purification
grade: 11
subject: Chemistry
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