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Microbes in Aquatic Environment

Microbes in Aquatic Environment
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.

half
greater
approximately equal
lesser

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

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

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

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

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Microbes in Aquatic Environment
Which of the following species in water reveal the presence of fecal pollution of human or animal origin?

All of these
Clostridium perfringens
E.coli
Fecal Streptococci

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

None of these
Secondary treatment
Tertiary treatment
Primary treatment

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Microbes in Aquatic Environment
Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the

Winogradsky column
Redfield ratio
Gibbs free energy
microbial loop

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