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MICROBES IN AQUATIC ENVIRONMENT

Microbes in Aquatic Environment
The Redfield ratio is an index of concentration of

carbon, nitrogen and phosphorous
nitrogen, potassium and iron
carbon, phosphorous and sulfur
carbon, hydrogen and oxygen

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Microbes in Aquatic Environment
Removal of solids is generally considered as a

None of these
Primary treatment
Secondary treatment
Tertiary treatment

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Microbes in Aquatic Environment
All of the following species are considered coliforms except

Salmonella typhi
Klebsiella pneumoniae
Enterobacter aerogenes
Escherichia coli

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Microbes in Aquatic Environment
The sulfur pearl of Namibia, Thiomargarita namibiensis

stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume
is the worlds smallest bacterium
is the worlds largest bacterium
Both (a) and (b)

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

secondary treatment
primary treatment
tertiary treatment
both (a) and (b)

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