Answer: rivers gets polluted because of many reasons such as,dumping solid wastes and plastic at sea water,garbage etc , this wastes contain many toxic substances which can even kill the aquatic animals!! .we humans are responsible for such things but these things would only cause us damaged. ie, swimming or drinking these contaminated water gives us many infections,chronic disease and all..and can even cause skin problems, cancers etc. this also may stop the life of aquatic animals..
we can off course control this,by :
*dont throw any plastics or unwanted materials in water bodies.
*dont dispose any household chemical in sea waters.
*use minimum amount of water for usage..and dont waste it for no reason...
i hope this is informative for you!!
