Pollution and Polar Bears

“Basic Facts About Polar Bears.” Defenders of Wildlife, 10 May 2016,   

         defenders.org/polar-bear/basic-facts. Accessed 30 March 2018.

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“Polar Bear FAQ.” Polar Bear FAQ, Polar Bears Internationall, 

         polarbearsinternational.org/polar-bears/polar-bear-faq/.

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Wiig, Ø., Amstrup, S., Atwood, T., Laidre, K., Lunn, N., Obbard, M., Regehr, E. & Thiemann, G. 2015.           Ursus maritimus. The IUCN Red List of Threatened Species 2015: e.T22823A14871490. 

         http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T22823A14871490.en. Accessed 20 March           2018.

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 “What Does a Polar Bear Eat?” WWF, World Wildlife Fund,

          wwf.panda.org/what_we_do/where_we_work/arctic/wildlife/polar_bear/diet/. Accessed

      19 March 2018.