By using them to dispose of waste such as sewage.
humans pollute rivers!
Because they are too ignorant or lazy or rapacious not to pollute.
they release fossil fuels in to the atmosphere, fossil fuels is mainly coal and they pollute the atmosphere and rivers as you said.
pollute it even more
umm weel basically, we pollute rivers and land and many many other stuff like our world we live on 24:7 :)
Petrol, called "gasoline" in the United States, can pollute lakes and rivers and poison the fish.
No one makes polluted rivers. Animals and people pollute them through natural and technological processes.
they flush their medicine down into the rivers and kill fish
everywhere, it can pollute rivers, lakes, and kill plants.
We pollute rivers, and land we use gas to much and stuff.
If we continue to pollute our rivers, the world's oceans may succumb to the combined effects of our careless water pollution. I would like to use pollute and pollution in one sentence.
Oil can pollute the water (you might not consider that an object) and when people throw trash in rivers or ocean or even lakes the water can be polluted.