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Warmer Temperatures Causes Alaska to Sink

      Everthing is collapsing. Houses collapse, trees fall over, and giant potholes in the ground. Could Alaska be sinking ?

     Scientist think they know what happened. Warmer temperatures may be causing Alaska's frozen ground to thaw. Almost eight-five percent of Alaska's land surface has permafrost. Permafrost is a part of the ground that is always frozen.

     Permafrost supportsthe ground above it. That includes trees, houses, and roads. If the permafrost thaws, the round can collapse.

      " When huge pieces in permafrost , which can be as large as a house, melt the ground collapses and big holes form. Where there is a house where the holes form, the house collapses, too. Then there are huge pot holes, " Gunter Weller of the Cooperative Institute for Artic Research said.

        But why is the permafrost thawing ?

         Some scientist say that human-caused pollution is leading to global warming. Most scientist agree that Alaska has been getting warmer. They say the warmer temperature is causng permafrost to thaw in some areas. 

Posted by Ashley House on January 13, 2005 at 09:49 AM in Mysteries | Permalink | Comments (0)

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