Question

Why was the coliform on bacterial constant to indicate the level of pollution in Ganga mention any two factors due to which the Ganga has been polluted

Answer 1

1 Untreated sewage such as garbage and human waste
2 Bathing,washing,immersion of ashes or corpses
3 Chemical effluents from industries

Hope it helps....

Answer 2

i)due to bathing of animals ,humans washing clothes. ii)due to presence of Coliform bacteria which found in human intenstine