首页
登录
职称英语
Arctic Conditions for Polar Bears Arctic conditions may become critical for p
Arctic Conditions for Polar Bears Arctic conditions may become critical for p
游客
2023-12-29
7
管理
问题
Arctic Conditions for Polar Bears
Arctic conditions may become critical for polar bears by end of 21st century.
Shifts in the 【L1】______ of ice cover, especially the possible lengthening of 【L2】______, may impact polar bears under projected warming before the end of the 21st century, 【L3】______a study published recently in the 【L4】______PLOS ONE by Stephen Hamilton from University of Alberta and colleagues.
Sea ice across the Arctic is 【L5】______ and altering physical characteristics of 【L6】______, and polar bears are 【L7】______to these changes in sea ice conditions. The authors of this study used 【L8】______for the Canadian Arctic Archipelago from 2006-2100 and metrics 【L9】______ polar bear energetics modeling 【L10】______ the conservation challenges for polar bears facing 【L11】______.
Shifts 【L12】______ multiyear ice to annual ice cover 【L13】______ the region, 【L14】______ lengthening ice-free periods, may become 【L15】______ for polar bears 【L16】______the 21st century with projected warming. Each polar bear 【L17】______in the Archipelago may undergo 2-5 months of 【L18】______, where no such conditions exist presently. Under business-as-usual climate projections, polar bears may face starvation and 【L19】______across the entire Archipelago by the year 2100. "We predict that nearly one-tenth of the world’s polar bear habitat, as much as one-quarter of their global population, may undergo 【L20】______habitat loss under business-as-usual climate projections," said Stephen Hamilton. [br] 【L1】
Arctic Conditions for Polar Hears
Arctic conditions may become critical for polar bears by the end of 21st century.
Shifts in the timing and duration of ice cover, especially the possible lengthening of ice-free periods, may impact polar bears under projected warming before the end of the 21st century, according to a study published recently in the open-access journal PLOS ONE by Stephen Hamilton from University of Alberta and colleagues.
Sea ice across the Arctic is declining and altering physical characteristics of marine ecosystems, and polar bears are vulnerable to these changes in sea ice conditions. The authors of this study used sea ice projections for the Canadian Arctic Archipelago from 2006-2100 and metrics developed from polar bear energetics modeling to gain insight into the conservation challenges for polar bears facing habitat loss.
Shifts away from multiyear ice to annual ice cover throughout the region, as well as lengthening ice-free periods, may become critical for polar bears before the end of the 21st century with projected warming. Each polar bear population in the Archipelago may undergo 2-5 months of ice-free conditions, where no such conditions exist presently. Under business-as-usual climate projections, polar bears may face starvation and reproductive failure across the entire Archipelago by the year 2100. "We predict that nearly one-tenth of the world’s polar bear habitat, as much as one-quarter of their global population, may undergo significant habitat loss under business-as-usual climate projections," said Stephen Hamilton.
选项
答案
timing and duration
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3315204.html
相关试题推荐
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
Apilotcannotflyaplanebysightalone.Inmanyconditions,suchasflyin
Apilotcannotflyaplanebysightalone.Inmanyconditions,suchasflyin
Apilotcannotflyaplanebysightalone.Inmanyconditions,suchasflyin
Apilotcannotflyaplanebysightalone.Inmanyconditions,suchasflyin
随机试题
Manyyoungpeoplebelievegoodgradesandexcellentinternshipswilllandth
ThefloodofwomenintothejobmarketboostedeconomicgrowthandchangedU
下述麻醉维持方法更适合缩窄性心包炎的是()A.丙泊酚+异氟烷麻醉 B.异氟
下列不属于能源转换的是( )。A.煤炭变成电力 B.原煤洗成洗煤 C.重油
内燥常见于( )。A.肺、胃、大肠 B.肺、脾、肾 C.肺、胃、肾 D.
下列关于我国全面深化改革的说法,正确的是:A.改革的主要任务已经完成 B.
股票价格和每股收益的比率被称为()。A.市盈率 B.市净率 C.净值收
某施工队在200个工日内完成了800m3的工程,但有400m3不符合质量要求
在学龄前阶段,儿童在各方面得到迅速发展的同时也面临一些问题,儿童在学龄前阶段面临
我国古代司法中,当法无明文规定时,有“举重以明轻”的做法,这种做法( ) A
最新回复
(
0
)