character: Ms. Johnson
topic: The Role of pH in Biological Reactions
grade: 9
subject: Science
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character: Mr. Smith
topic: Introduction to Acids and Bases
grade: 9
subject: Science
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character: Dr. Lee
topic: Enzyme Activity and pH Levels
grade: 9
subject: Science
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character: Mrs. Patel
topic: Effects of pH on Cellular Respiration
grade: 9
subject: Science
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