alleryStart learning →Biological Oxygen Demand (BOD) is a standard criterion for
AMeasuring oxygen levels in blood
BComputing oxygen levels in forest ecosystems
CPollution assay in aquatic ecosystems
DAssessing oxygen levels in high altitude regions
Answer & Solution
Correct answer: A. Measuring oxygen levels in blood
UPSC CSE Prelims 2017 (GS-I, Set C), Q.59. Official answer key: A.
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