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Microbes in Aquatic Environment

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

Escherichia coli
Enterobacter aerogenes
Klebsiella pneumoniae
Salmonella typhi

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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?

Clostridium perfringens
All of these
E.coli
Fecal Streptococci

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Microbes in Aquatic Environment
The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer

half
approximately equal to
lesser
greater

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Microbes in Aquatic Environment
Activated sludge undergoes

any of these
Secondary treatment
Primary treatment
Tertiary treatment

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Microbes in Aquatic Environment
Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments.

greater
half
approximately equal
lesser

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

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

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