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QUESTION 9 Select ALL of the correct options that apply below. Faecal coliforms: cause illness if they are present in drinkin
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answer) fecal coliforms are presentin the feces and the other arm blooded animals they are non pthogenic and present doesnot cause any illness but there persence is used as a indicator of the other pathogenic bacteria in water whcih can cause diaharrea , vomoting, dysentry etc.

so the correct options are third and fourth.

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