global warming is cause by the increase of temperature. This will cause melting of ice in poles. Here are some information about the warming global and its effect toward our earth and wildlife especially animals at the artic.
Title: What is global warming??
http://library.thinkquest.org/CR0215471/global_warming.htm
Title: World view of global warming ( The photographic documentation of climate change)
http://www.worldviewofglobalwarming.org/
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