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>> http://en.wikipedia.org/wiki/File:Palliser%27s_Triangle_map.png
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>> http://drought.unl.edu/DroughtforKids/HowDoesDroughtAffectOurLives.aspx
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>> http://mrcc.isws.illinois.edu/living_wx/drought/drought_corn.png
>> http://www.ask.com/question/how-does-drought-affect-people
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http://www.livescience.com/21469-drought-definition.html
http://wac.450f.edgecastcdn.net/80450F/nj1015.com/files/2012/04/drought2.jpg
http://phoenix.gov/waterservices/wrc/yourwater/climchange/perspective/
http://mountaintownnews.net/wp-content/uploads/2013/03/Lake-Mead.jpg
http://www.thegwpf.org/scientists-admit-predict-drought/
http://library.thinkquest.org/C003603/english/droughts/causesofdroughts.shtml
https://www.dosomething.org/tipsandtools/11-facts-about-droughts
http://www.ready.gov/drought
>> http://en.wikipedia.org/wiki/File:Palliser%27s_Triangle_map.png
>> http://canadianbiodiversity.mcgill.ca/english/ecozones/prairies/prairies.htm
>> http://drought.unl.edu/DroughtforKids/HowDoesDroughtAffectOurLives.aspx
>> https://www.wmo.int/pages/publications/meteoworld07/_archive/en/apr2007/images/heinavesi_000.
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>> http://downloads.globalchange.gov/usimpacts/allimages/3-Water/3-Hi%20res/3-Water-pg-51_top.jpg
>> http://www.epa.gov/climatechange/images/impacts-adaptation/PinonPineDieoff.jpg
>> http://mrcc.isws.illinois.edu/living_wx/drought/drought_corn.png
>> http://www.ask.com/question/how-does-drought-affect-people
>> http://answers.yahoo.com/question/index?qid=20071104121149AAv7SaW
>> http://www.ec.gc.ca/inre-nwri/default.asp?lang=En&n=0CD66675-1&offset=8&toc=hide
>> http://en.wikipedia.org/wiki/File:Canadian_Precipitation_Anomalies_2002.jpg
>> http://en.wikipedia.org/wiki/Drought_in_Canada
http://www.livescience.com/21469-drought-definition.html