Page 618 - Polymer-based Nanocomposites for Energy and Environmental Applications
P. 618
570 Polymer-based Nanocomposites for Energy and Environmental Applications
Surface water Swamps 11% Rivers 2% Lakes 87%
Distribution of water on Earth Fresh water Other 0.9% Ice sheets and glaciers 67% Groundwater 30.1% Surface water 0.3%
All water Saline (oceans) 97% Fresh water 3% Water available for human consumption
Glaciers 2% earth.
Usable water in the world Rivers, lakes, and ground water 1% on water of
Oceans 97% Distribution 21.1
Fig.
