character: Chemistry Guru
topic: Understanding pH Levels
grade: 9
subject: Science
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character: Science Explorer
topic: Acids and Bases
grade: 9
subject: Science
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character: Lab Assistant
topic: Measuring pH: Tools and Techniques
grade: 9
subject: Science
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character: Environmental Scientist
topic: The Importance of pH in Ecosystems
grade: 9
subject: Science
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