character: Dr. Sam Black
topic: Types of Catalysts and Their Applications
grade: 9
subject: Chemistry
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character: Dr. Emily Zhao
topic: Introduction to Catalysis
grade: 9
subject: Chemistry
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character: Mr. John Smith
topic: Enzymes as Biological Catalysts
grade: 9
subject: Chemistry
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character: Ms. Rachel Green
topic: Industrial Catalysts and Their Uses
grade: 9
subject: Chemistry
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