character: Nitrogen Fixation
topic: How Nitrogen Fixation Works in the Nitrogen Cycle
grade: 9
subject: Biology
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character: Ammonification
topic: Role of Ammonification in Soil Nutrient Cycling
grade: 9
subject: Biology
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character: Nitrogen Cycle
topic: Interactions Between Nitrogen Fixation and Ammonification
grade: 9
subject: Biology
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character: Plants
topic: Importance of Nitrogen Fixation and Ammonification for Plant Growth
grade: 9
subject: Biology
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