2517.Climate change may wipe out polar bears by the end of this century,a recent report in the journal Nature Climate Change said . (1)
According to Science Daily,the Arctic,the only natural habitat for polar bears,is in danger.Sea ice in the area could disappear completely by 2035.This is undoubtedly bad news for this animal,as they use the floating sea ice to hunt. (2)
According to Science Daily,this model allowed researchers to compare Arctic sea ice conditions during the last interglacial(間冰期的) period—the warm period that occurred around 127,000 years ago—to present day conditions.Researchers found that during the last interglacial period many shallow pools of water formed on the surface of the Arctic sea ice during spring and summer . (3)
This is because if there are larger areas of melt ponds,more heat is absorbed by sea ice,which causes it to melt further. (4)
This is a frightening thought for scientists who see the pattern repeating. "If what's happening to the Arctic right now is anything like the last interglacial period,there's a chance it could be almost free of sea ice in only 15 years," researchers told MSN. In addition to the potential extinction of some animal species,the melting of sea ice could cause devastating(毀滅性的)natural disasters. (5)
To save the northernmost region of Earth,what we should be doing is "focusing all our minds on achieving a low-carbon world as soon as humanly feasible(可行的)",Louise Sime,a researcher at the British Antarctic Survey,said in a statement.
A.A rise in sea level could increase floods along coastal areas. B.In the last interglacial period,the Arctic sea ice actually disappeared. C.Melt ponds on the surface of sea ice largely determine their absorption of heat. D.Work together and stop everything that is causing the Arctic ice to melt so quickly. E.These pools,known as melt ponds,played a crucial role in the melting of the sea ice. F.Scientists made this prediction by using the UK Met Office's Hadley Centre climate model. G.However,unless more is done,their extinction is likely to come earlier as their habitat may disappear.