By the impact of global warming, the Arctic sea ice is shrinking polar bears foraging more difficult, scientists have warned global warming problem if there is no improvement, there are polar bears may disappear within a few decades. <br><br>Little polar bear, lying helplessly in the snow inside its mother not far away, because the anesthetic and could not move, according to a study made by scientists, these bears is one step toward an impasse, and polar bears greatest natural enemy is global warming. <br><br>Arctic surface air temperature so that the greenhouse effect, it rose between 50 years and 4 degrees, down 9% from a year sea ice, polar bears have less time hunting. Moderator: "sea ice every 10 years one week earlier broken open, polar bears have less one week, their favorite hunting ringed seals." <br><br>Hunting seals, polar bears are to survive the most important way, they will walk along the sea ice , after the discovery of foot and then break ice seals, the seals haul, decreasing sea ice, polar bears facing starvation but also to the crisis. Wildlife biologist: "If the sea ice is really disappear completely, polar bears will be extinct." <br><br>It sounds quite distant forecast, but it is the polar bear, is facing a harsh reality; in the future if you can not save these endangered animals, we only artificially protected environment zoo, saw polar bear figure.
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