character: Dr. Kumar
topic: The role of beneficial bacteria in aquariums
grade: 10
subject: Biology
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character: Ms. Thompson
topic: Nitrogen cycle and its importance in fish tanks
grade: 10
subject: Biology
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character: Mr. Patel
topic: The impact of water quality on aquatic life
grade: 10
subject: Biology
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character: Dr. Lee
topic: Types of bacteria in aquariums and their functions
grade: 10
subject: Biology
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