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Question

The presence of high coliform counts in water indicate:

A
contamination by human wastes
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B
phosphorus contamination
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C
decreased biological oxygen demand
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D
hydrocarbon contamination
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Solution

The correct option is B contamination by human wastes

A fecal coliform is an anaerobic, rod-shaped, gram-negative bacterium. Coliform bacteria generally originate in the intestines of warm-blooded animals. The presence of fecal coliform bacteria in aquatic environments indicates that the water has been contaminated with the fecal material of man or other animals.


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