Coli or E. Coli are harmless organisms but their presence in water indicates the

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Question:
Coli or E. Coli are harmless organisms but their presence in water indicates the

1. Absence of pathogenic bacteria

2.Absence of non pathogenic bacteria

3.Presence of non pathogenic bacteria

4.Presence of pathogenic bacteria

Posted Date:-2022-09-22 01:57:10

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