A river cleans itself in bends in twists. there are little deposits of dirt and trash in the corners and twists of a river. this builds up and cleans the main Delta of a river.
Governments use rivers to clean it by putting the water into the "Water Treatment Plant." After they clean the water they put in your house to drink.
Only in some rivers.
You don't litter them in the first place
rerouted two rivers
cause if there aren't any rivers or clean water were they live, they have to make one to survive
wetlands
used it for fishing,to make drums[they stick it inside of the drum]swim in, to clean there selves,and to clean dishes,cook with,drink it
in Iraq in between the Tigris and Euphrates rivers. its not fertile and clean as it was before
Schoolhouse Rock - 1973 FatCat Blue The Clean Rivers Song 7-7 was released on: USA: 2009
Yes, platypuses do live near rivers, creeks and clean water sources. They can only find their food in freshwater, and they also dig their burrows in the banks of creeks and rivers.
They modify Rivers and Lakes because they need to make it clean and not dirty so they can drink, wash their hands, or bodies in that water.
We can control pollution being dumped into the rivers, regularly remove trash, and quickly address toxic spills to keep them clean. Rivers will naturally repair themselves but this process can take many generations or longer depending on the severity of the problems.