define the terms in COD and DOD and tlv what is the answer
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Is it possible to have a lower value COD than BOD for the same sample taken at lake water? ... BOD (Biologocal Oxygen Demand) means the amount of oxygen (in mg/l) microorganisms like bacteria need to 'eat' the organic polution (sugars, fat, proteins, ...). ... COD (Chemical Oxygen Demand
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