Transcription of CHAPTER 11 1 Aqueous Solutions - natcap.org
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1234567891011121314151617181920212223242 526272829303132333435363738 S39 RCHAPTER 11 Aqueous SolutionsDrilling to China More water than rivers Saving the aquifer Drying with Xeriscapes Everywhere in the house Rainwater andgraywater Creating urban watersheds Wastewater equalsfood Watering the communityWE LIVE ON THE WATER PLANET. THREE-FOURTHS OF THE EARTH S SURFACEis covered by water. Yet fresh, clean water is scarce and getting more all the water on earth, less than 3percent is fresh, and all but three-thousandths1of that is locked up in glaciers and icecaps or is too deep inthe earth to retrieve. The freshwater available in rivers, lakes, and acces-sible groundwater is increasingly nearly 200,000square miles of reservoirs to store more than 1,400cubic miles ofwater a redistribution of natural flows that has measurably changedthe orbital characteristics of the planet3 even whole cities the size ofMexico City are steadily becoming shorter of water, and water scarcityhas changed global patterns of grain the land s water-holdinggreen skin changes to water-losing brown scabs, water tables are retreat-ing on every continent, with 70percent of the pumping to irrigate s water table is retreati
This success is starting to be mirrored worldwide:1995world water withdrawals were only about half what planners had predicted thirty
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