linkedin post 2014-07-30 04:17:22
LARGEST SOURCE OF FRESH WATER IN EARTH. "The Great Lakes are the largest surface freshwater system on the Earth. Only the polar ice caps contain more fresh water ... 84% of North America's surface fresh water ... about 21% of the world's supply of surface fresh water" is in the Great Lakes. http://lnkd.in/dmj8N_v View in LinkedIn