Name the main big source of water?

Economical use and avoiding the wastage of water is called:

Pick the odd one out

A solution in which no more solute can be dissolved at any temperature is called a:

Rivers, Lakes and ponds are called

Which is essential for photosynthesis?

The setting of the suspended particles under the action of gravity is called:

___________ are used to enhance the crop yield.

The maximum mass of the solute that can be dissolved in 100g of the solvent at any specified temperature is called its:

Contamination of water by harmful substances and germs etc are called water: