character: Dr. White
topic: Nutrient Leaching due to Heavy Rainfall
grade: 11
subject: Chemistry
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character: Professor Green
topic: Impact of Soil Erosion on Nutrient Availability
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Water Cycle and Its Influence on Soil Chemistry
grade: 11
subject: Chemistry
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character: Mr. Brown
topic: Effects of Acid Rain on Soil Nutrients
grade: 11
subject: Chemistry
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