Water is life, as simple as that. We have plenty of it on our planet, from the composition of our body to the air we breathe. And yet, it remains so precious to many of us. Please find below some very important facts that are worth learning. Water Resources The Earth's total volume of water is 1.4 billion km3. A world of salt: Only 2.5% of which is freshwater (35 million km3). Of those 2.5% of