character: Mr. Alex Martinez
topic: Catalysts and Their Role in Chemical Reactions
grade: 9
subject: Science
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character: Dr. Linda Roberts
topic: Understanding Reaction Rates
grade: 9
subject: Science
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character: Ms. Sarah Johnson
topic: Enzymes as Biological Catalysts
grade: 9
subject: Science
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character: Mr. David Lee
topic: The Importance of Catalysts in Industry
grade: 9
subject: Science
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