How much water is there on earth? (Introduction)

by David Turell , Tuesday, August 21, 2012, 00:03 (4479 days ago) @ Balance_Maintained

Your chart does not account for this: http://www.sciencedaily.com/releases/2007/02/070210171556.htm-Itwas Matt's chart. Even though the water is there, how do we get it? It may percolate to the surface but over how many millenia? We need to availability of the water we can reach. Earth has life because it has so much water.