Because river water is a running water which doesnt stays at one place...in Biology it is said if a substain doesnt movies from its place, it can get lost of germs etc...
eg: if the blood doesnt flows in our whole body ,you know what will happen.
hope you got me. :)
it is a fresh water river
Fresh water from the Rocky Mountain snow melt.
fresh :)
fresh :)
the water in the amazon river is fresh water
The great Mississippi river is made entirely of fresh water.
fresh
The Avon River is fresh water.
yes
Fresh.
fresh water
The Congo River is freshwater.