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The Black Bear before Global warming has a coat of fur and in the winter, due to the cold climate, they hibernate.
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The Black Bear after Global Warming has lost all it's fur and in the winter they no longer hibernate because the Climate doesn't get very cold.
Despite their name, Black Bears can be blue-gray or blue-black, brown, Cinnamon, or even (very rarely) white.
Bibliography: "Black Bears." National Geographic. N.p., n.d. Web. 22 Jan. 2016.