character: Ms. Patel
topic: pH and Nutrient Solubility in Biological Systems
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Acid-Base Reactions in Everyday Life
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: The Role of pH in Plant Growth
grade: 9
subject: Chemistry
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character: Ms. Garcia
topic: Nutrient Availability in Soil Chemistry
grade: 9
subject: Chemistry
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