Question

the presence of a particular group of bacteria in water bodies indicates contamination. identify the group​

Answer 1

Answer:

Algae

Explanation:

Which grows in colonies

Answer 2

$\huge\mathbb\red{ANSWER!!!}$

➟A few varieties of bacterias are considered as indicator organisms for pollution.

➟One of such group is Coliform bacteria. The presence of Coliform bacteria

e.g. E.Coli in the surface water is a common indicator of faecal contamination.