character: Beneficial Bacteria in Wastewater Treatment
topic: Role of Beneficial Bacteria
grade: 10
subject: Science
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character: Nitrogen Cycle
topic: Bacteria's Role in Nitrogen Removal
grade: 10
subject: Science
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character: Anaerobic Decomposition
topic: Bacteria in Sludge Treatment
grade: 10
subject: Science
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character: Bioremediation
topic: Using Bacteria to Clean Contaminated Water
grade: 10
subject: Science
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