character: Ms. Lisa Brown
topic: Environmental Impact of Catalysts
grade: 9
subject: Science
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character: Dr. John Smith
topic: Catalysts and Their Role in Green Chemistry
grade: 9
subject: Science
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character: Ms. Emily Johnson
topic: Effect of Catalysts on Air Pollution Reduction
grade: 9
subject: Science
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character: Mr. David Lee
topic: Sustainable Practices in Catalyst Usage
grade: 9
subject: Science
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