character: Mr. Thompson
topic: The Importance of pH in Soil Chemistry
grade: 11
subject: Chemistry
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character: Mrs. Johnson
topic: Effects of Soil pH on Plant Growth
grade: 11
subject: Chemistry
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character: Dr. Smith
topic: Understanding Soil Chemistry: pH Levels and Nutrient Availability
grade: 11
subject: Chemistry
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character: Ms. Davis
topic: Measuring Soil pH: Techniques and Implications for Agriculture
grade: 11
subject: Chemistry
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