Give an example of these which don’t dissolve in water.

A small water body is called

The dirty water looks

During summer, the level of water in a river is

One of the best and simple method of cleaning water

What kind of plants grows around the river?

Huge flow of water on an area which is usually dry in

Longest river in the world is

A clean looking water may contain

During the rainy season, the level of water in a river is