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Published byDelphia McCarthy Modified over 9 years ago
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AND NOT A DROP TO DRINK Water, Water, Everywhere
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Distribution http://www.bbc.co.uk/news/science-environment-11435522 BBC Water Scarcity Map Published September 29 th, 2010
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Distribution AAAS 2000
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Water Budget Demo What do you rely on the available freshwater for? How would your list differ if you were in a LEDC?
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Water Budget
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Distribution of the World’s Glaciers
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Access & Excess 1.1 Billion people live without clean drinking water 2.6 billion people lack adequate sanitation 1.8 million people die every year from diarrheal diseases 3900 children die everyday from waterborne diseases Daily per capita use of water in residential areas: -350 litres in North America and Japan -200 litres in Europe -20 litres in Sub-saharan Africa (or less) Over 260 river basins are shared by two or more countries, mostly without adequate legal or institutional arranegments Quantity of water needed to produce 1 kg of: -wheat: 1,000 L -rice: 1,400 L - beef: 13,000 L
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Personal Choices 1 kg of beef requires 13,000 L of water 200 L of water represents the daily per capita use of a person in Europe. 13,000 L /200 L/day = 65 days Therefore it would take 65 days of the water requirements for a European to produce 1 kg of beef. That’s a lot of water. You’re telling me.
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Conflict – Colorado River Originates in the Rocky Mountains Draining into the Gulf of California Dams provide flood control, recreation, and hydroelectric power 30 million people use the water Water rights determined long ago Las Vegas & Nevada are thirsty!
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Conflict – Colorado River
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7 states share the Colorado river Droughts, overuse, and climate change are threatening supplies Colorado is little more than a trickle before entering the Gulf of Mexico.
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Conflict – Colorado River Las Vegas, Nevada, needs more water than it is allotted Other states will let Las Vegas drill for underground water Drilling threatens the area’s ecology and people Headed for Nevada’s Supreme Court
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Conflict – Israel & Palestine http://youtu.be/hH4OKho3550 http://www.waterfootprint.org/WFP_files/Img/IsraelWaterMap.jpg
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Explain the water “system” on Earth with respect to storages and flows.
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