be surprised that 85% of the Colorado River is used for inefficient irrigation...
and
by THIS fact - arable land is decreasing.
So, less land available, using too much water...
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Why The World Has No Choice But To Buy More And More Fertilizer
http://www.businessinsider.com/chart-of-the-day-arable-land-per-capita-2011-2?utm_source=Triggermail&utm_medium=email&utm_term=Clusterstock+Chart+Of+The+Day&utm_campaign=Clusterstock_COTD_022511
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