character: Plant Pal
topic: Nutrient Availability in Different pH Levels
grade: 9
subject: Science
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character: Earth Explorer
topic: Soil pH and Plant Growth
grade: 9
subject: Science
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character: The Chemistry Guru
topic: Chemical Reactions in Soil
grade: 9
subject: Science
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character: Eco Warrior
topic: Impact of pH on Ecosystems
grade: 9
subject: Science
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