Answer :
the following causes for the pollution of river and lakes :-
- it happens due to discharging of unwanted materials of industries , hospitals , etc.
- floating of dead bodies
- chemicals and fertilizers are mixed up with water bodies when flood occurs .
- more uses of water in multipurpose projects as a results chemicals are using there are mixed up .
- waste materials of our houses are also mixed with river and lakes .
- it happens due to discharging of unwanted materials of industries , hospitals , etc.
- floating of dead bodies
- chemicals and fertilizers are mixed up with water bodies when flood occurs .
- more uses of water in multipurpose projects as a results chemicals are using there are mixed up .
- waste materials of our houses are also mixed with river and lakes .
the causes for the pollution of rivers and lakes are :-
> floating of waste materials from our houses are mixed with rivers and lakes .
> dead bodies of animals are floating in the water
> pesticides and chemicals are discharge from the industries .
> wastes of hospitals are also the causes of water pollution .
> floating of waste materials from our houses are mixed with rivers and lakes .
> dead bodies of animals are floating in the water
> pesticides and chemicals are discharge from the industries .
> wastes of hospitals are also the causes of water pollution .