character: Dr. Lisa Brown
topic: The Importance of pH in Environmental Science
grade: 9
subject: Chemistry
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character: Mr. John Smith
topic: Acid-Base Reactions and Their Environmental Impact
grade: 9
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Water Quality and pH Levels
grade: 9
subject: Chemistry
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character: Dr. Emily White
topic: pH Monitoring in Aquatic Ecosystems
grade: 9
subject: Chemistry
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