There are 164 major rivers, but some aren't even counted so no one knows the full total.
sem semere
All rivers in the world are polluted to a greater or lesser extent. You should be more specific.
Ganga, Krishna, yamuna, damodhara, vaapi.
No one makes polluted rivers. Animals and people pollute them through natural and technological processes.
Yes
they can be polluted
Well littering can casue a polluted lake
It is one of the most polluted rivers in the world
It kills them
by the oil
All countries are polluted to a greater or lesser extent.
whet
No. Because polluted river and slogans don't make sense.