character: Decomposers in Ecosystems
topic: Role of decomposers in nutrient cycling and nitrogen recycling
grade: 9
subject: Science
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character: Nitrogen-Fixing Bacteria
topic: The process of nitrogen fixation and its importance in ecosystems
grade: 9
subject: Science
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character: Ammonifying Bacteria
topic: Transformation of organic nitrogen into ammonia in the nitrogen cycle
grade: 9
subject: Science
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character: Nitrifying Bacteria
topic: The role of nitrifying bacteria in converting ammonia to nitrates
grade: 9
subject: Science
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