Biological Oxygen Demand (BOD) is a standard criterion for

By | June 23, 2017

Ques: Biological Oxygen Demand (BOD) is a standard criterion for

Options are:

Option 1: Measuring oxygen levels in blood

Option 2: Computing oxygen levels in forest ecosystems

Option 3: Pollution assay in aquatic ecosystems

Option 4: Assessing oxygen levels in high altitude regions

Correct Answer: Pollution assay in aquatic ecosystems

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