character: Mr. Lee
topic: Types of Catalysts in Industrial Processes
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: The Role of Catalysts in Chemical Reactions
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Enzymes as Biological Catalysts
grade: 9
subject: Chemistry
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character: Mr. Clark
topic: Catalytic Converters and Pollution Control
grade: 9
subject: Chemistry
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