character: Ecosystem Health
topic: Impact of Denitrification on Water Quality
grade: 11
subject: Biology
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character: Nitrogen Cycle
topic: Role of Denitrification in Ecosystem
grade: 11
subject: Biology
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character: Water Quality Management
topic: Effects of Nutrient Pollution
grade: 11
subject: Biology
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character: Aquatic Ecosystems
topic: Importance of Denitrification in Lakes and Rivers
grade: 11
subject: Biology
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