character: Ms. Laura Chen
topic: Impact of Soil pH on Plant Growth
grade: 12
subject: Chemistry
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character: Dr. Emily Nguyen
topic: Effects of Nutrient Availability on Plant Development
grade: 12
subject: Chemistry
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character: Mr. John Smith
topic: Chemical Properties of Soil and Their Impact on Ecosystems
grade: 12
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Role of Soil Microorganisms in Plant Health
grade: 12
subject: Chemistry
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