What is water?. Many people would say that water is a junction of one oxygen atom and two hydrogen atoms, (H2O). This is entirely correct, but the water is more important than a simple junction of hydrogen and oxygen. Water is the principal font of live. Everything around us is water, absolutely everything, you, me, him, her, it's all water and without this precious liquid is impossible the live exist. If there is not water, then, there is not life. Water can be found in state solid, liquid or gas.
Over 70% of the land is covered by water but this number only 3% is freshwater, of which 2% is frozen at the poles are missing, when mixed when thawed. Water is an abundant element, but actually the amount that can be used for drinking is little.