Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from:
Correct answer: C. Petroleum industry
- A. Domestic sewage
- B. Dairy industry
- C. Petroleum industry
- D. Sugar industry
Explanation
Biochemical Oxygen Demand (BOD) is a commonly used water quality parameter that measures the amount of dissolved oxygen consumed by microorganisms while they decompose organic matter in water. Petroleum is not degraded by decomposer microbes.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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