- Dissolved Oxygen (DO) is a key indicator of water quality in rivers and other water bodies. - Healthy rivers typically have high levels of DO. - Pollution, especially from organic waste (like sewage or agricultural runoff), leads to biological oxygen demand (BOD) and chemical oxygen demand (COD), which consume dissolved oxygen. - Low DO levels can harm or kill fish and other aquatic organisms.
The water pollution in a river is determined by measuring the dissolved amount of
Asked in UPPSC Upper Mains 2011 · Topic: Pollution (Water Pollution: Sources, common pollutants, water quality indicators (BOD, COD, DO), effects, control measures.)
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