character: Dr. Emily Carter
topic: Effects of Soil pH on Nutrient Absorption
grade: 12
subject: Biology
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character: Dr. Sarah Thompson
topic: Soil Chemistry and Plant Growth
grade: 12
subject: Biology
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character: Professor Mark Johnson
topic: The Role of pH in Soil Fertility
grade: 12
subject: Biology
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character: Dr. Ava Martinez
topic: Impact of Soil pH on Microbial Activity
grade: 12
subject: Biology
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