Environment & Ecology · Environmental Studies
Biochemical Oxygen Demand (BOD) differs from Chemical Oxygen Demand (COD) in that:
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- 1BOD measures inorganic pollution, while COD measures biological pollution
- 2BOD measures total dissolved oxygen, while COD measures oxygen solubility
- 3BOD measures oxygen used by microorganisms, while COD measures oxygen used for chemical oxidation✓
- 4BOD measures oxygen at different temperatures, while COD measures oxygen at different depths
Correct answer
BOD measures oxygen used by microorganisms, while COD measures oxygen used for chemical oxidation
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