character: Mr. Thomas Edwards
topic: Using the pH Scale in Environmental Science
grade: 12
subject: Chemistry
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character: Dr. Lisa Nguyen
topic: Impact of Acid Rain on Ecosystems
grade: 12
subject: Chemistry
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character: Ms. Jane Smith
topic: Water Quality Assessment using pH and Other Parameters
grade: 12
subject: Chemistry
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character: Mr. Alan Brooks
topic: The Role of pH in Soil Chemistry
grade: 12
subject: Chemistry
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