A) Beggiatoa
B) Chlorella
C) Azospirilhan
D) Escherichia
Correct Answer: D
Solution :
A variety of the enteric group of bacteria (facultative, aerobic) reside in the human large intestine (eg., E. coli). Therefore, their presence in water supply indicates that water supply has been contaminated by sewage.You need to login to perform this action.
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