Goundwater
INTRODUCTION
Although 70 percent of the Earth's surface is covered by water, 97 percent of it is contained in the oceans and is too salty to drink (Cunningham and Saigo, 1992). Therefor, fresh water is a precious resource that in some areas of the world is so scarce, that people will fight wars over it. About 25 percent of the world's fresh water is groundwater. Although groundwater is not as accessible as surface water (lakes, rivers and streams), people …
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…Cunningham, W. P. and B. W. Saigo. 1992. Environmental Science: A Global Concern, WC Brown Publishing Group. Pages 304-316.
Enger, E. D. and B. F. Smith. 1992. Environmental Science: A Study of Interelationships, WC Brown Publishing Group. Pages 342-363.
Freedman, B. 1998. Environmental Science: A Canadian perspective, Prentice Hall. Pages 32-39.
Smith, R. L. 1996. Ecology and Field Biology: Fifth Edition, Harper Collins Publishers Inc. Page 66.
Internet Sources:
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