231. Brazil - Wikipedia, the free encyclopedia
2007-08-06. http://wwf.panda.org/what_we_do/where_we_work/amazon/about_the_amazon/ecosystems_amazon/rivers/ . Retrieved 2008-06-12 .
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232. Camouflage - Wikipedia, the free encyclopedia
a plant . WWF. http://wwf.panda.org/about_our_earth/teacher_resources/best_place_species/current_top_10/leafy_sea_dragon.cfm . Retrieved December 21, 2011 .
^ Cott, H.B. 1940. pages 141-143.
^ a b Srinivasan,
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233. Black rhinoceros - Wikipedia, the free encyclopedia
Fund . October 2004. http://panda.org/downloads/species/ecop13blackrhinofactsheet.pdf . Retrieved 2007-10-09 .
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234. Bird migration - Wikipedia, the free encyclopedia
1.0. . WWF. http://www.panda.org/about_wwf/what_we_do/climate_change/problems/impacts/species/cc_and_birds/index.cfm .
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235. Animation - Wikipedia, the free encyclopedia
Up (2009, USA), Kung-Fu Panda (2008, USA), Ice Age (2002, USA).
2D animation techniques tend to focus on image manipulation while 3D techniques usually build virtual worlds in which characters and objects move and interact. 3D
http://en.wikipedia.org/wiki/Animation - 117.5kb
236. Sleep - Wikipedia, the free encyclopedia
Ralph Greenspan, Satchin Panda, Philip Low, Robert Stickgold, Sara Mednick, Allan Pack, Luis de Lecea, David Dinges, Dan Kripke, Giulio Tononi (February 2007). "Waking Up To Sleep" (Several conference videos). The Science Network.
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237. Animal - Wikipedia, the free encyclopedia
^ National Zoo. "Panda Classroom" . http://nationalzoo.si.edu/Animals/GiantPandas/PandasForKids/classification/classification.htm . Retrieved September 30, 2007 .
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