Biology, asked by lakshmisathya28, 1 month ago

which among the following factors help in confirming the contamination of river water? (i) measurements of pH of river water. (ii) presence of chlorine in river water. (iii) existence of diverse life forms. (iv) presence of caliform bacteria​

Answers

Answered by harshitadalal2
2

presence of chlorine in river water. (

it's your answer

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