character: Mr. Smith
topic: Impact of pH on Water Quality
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Effects of Temperature on Solubility
grade: 11
subject: Chemistry
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character: Dr. Green
topic: Chemical Indicators for Water Quality Testing
grade: 11
subject: Chemistry
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character: Mrs. Adams
topic: Biological Factors Affecting Water Quality
grade: 11
subject: Chemistry
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