Completar frases Not Your Average Polar Bear (D)Versión en línea .......... por Tea Cher 1 seals surface hunting Average hunt float Greenland melts glacier floats ice risk ANIMALS bears WARMING disappearing easier ice polar researchers top surviving warms slabs unusual PROBLEMS Not Your Polar Bear THE WORLD IS CAUSING FOR MANY . Polar are among those most at . Living at the of the Earth , the bears rely on sea . This is ice that on the ocean ? s . Polar bears climb onto of sea ice to hunt . As the Arctic , though , sea ice is . That makes it harder for polar bears to . Now have discovered a group of bears in with an trick for . The bears live near a ? a big mass of on top of land . As pieces of this ice break off and into the ocean , the bears use them for . This group of polar bears may find it to survive as sea ice .
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