(i)Water pollution is caused due to :
(a) human defecation
(b) discharge of sewer water in rivers
(c) excessive use of pesticides and
fertilisers
(d) all the above
Answers
Answered by
1
Answer:
human defecation . . .. . . . . . . . . . . .
Answered by
2
Answer:
discharge of sewer water in rivers
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