character: Dr. Lee
topic: Chemical Reactions in Soil at Different pH Levels
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Impact of Soil pH on Plant Growth
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Acid-Base Reactions in Soil Chemistry
grade: 9
subject: Chemistry
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character: Dr. Kim
topic: Nutrient Availability in Soils with Varying pH Levels
grade: 9
subject: Chemistry
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