The common indicator organism of water pollut | vedclass

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(D) The presence of $Escherichia \ coli$ $(E. \ coli)$ in water is a standard indicator of fecal contamination.$E. \ coli$ is a bacterium that normall

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Escherichia coli

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(D) The presence of $Escherichia \ coli$ $(E. \ coli)$ in water is a standard indicator of fecal contamination.$E. \ coli$ is a bacterium that normally lives in the intestines of humans and other warm-blooded animals.Its presence in water samples indicates that the water has been contaminated with fecal matter,which may contain other pathogenic microorganisms.Therefore,it is widely used as a biological indicator to assess the quality of water and detect potential health risks.

Column-$I$	Column-$II$
$(P)$ Suspended solids	$(I)$ Fecal matter, bacteria, cloth and paper fibers
$(Q)$ Colloidal materials	$(II)$ Sand, silt, and clay
$(R)$ Dissolved materials	$(III)$ Nutrients (nitrate, ammonia, phosphate, sodium, calcium)

The common indicator organism of water pollution is ......

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