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CREDITSINFORMATION
www.mnr.cawww.canadiangeographic.ca
IMAGES1. http://online.wsj.com/article/SB10001424052702304441404577478610992607188.html2. http://online.wsj.com/article/SB10001424052702304441404577478610992607188.html
3. http://digitaljournal.com/img/2/4/2/6/4/5/i/3/8/7/o/742B1E19-65B8-D693-7A4F27EBEBE852FB_1.jpg
4. http://www.greenpeace.org/canada/en/Multimedia/Photos/climate--Energy/Tar-sands/Alberta-Oil-Spill/
5. http://www.thestar.com/news/canada/article/1250979--tens-of-thousands-of-dead-fish-rotting-on-lake-erie-shore
6. http://www.uwindsor.ca/dailynews/2012-05-04/science-can-correct-lake-erie-pollution-says-director-of-international-joint-commission
7. www.cbcnews.ca8. www.natogeo.com