character: Professor John Smith
topic: Soil Chemistry and Its Effects on Plant Growth
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Nutrient Cycling in Soil
grade: 12
subject: Chemistry
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character: Ms. Angela Clark
topic: Impact of pH on Plant Nutrient Availability
grade: 12
subject: Chemistry
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character: Professor Mark Turner
topic: Soil Amendments and Plant Health
grade: 12
subject: Chemistry
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