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because of the industrial revolution!:)
yes the Nigeria river is polluted
Its not polluted.
Polluted.
Yes, the Po River is really polluted.
Citarum is the most polluted river on Earth.
Guadalupe River State Park was created in 1983.
Upper Guadalupe River Authority was created in 1939.
Guadalupe-Blanco River Authority was created in 1933.
Nothing - the more a river is polluted, the less it does for us.
It is very polluted.
no it is not Polluted