Environment & Ecology · Environmental Science
Dissolved Oxygen (DO) values in aquatic systems decrease when:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Atmospheric oxygen is low
- 2Nitrate concentration is low
- 3Chemical Oxygen Demand (COD) is low
- 4Biological Oxygen Demand (BOD) is high✓
Correct answer
Biological Oxygen Demand (BOD) is high
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