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
50
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] 【L18】
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
ice-free conditions
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3315221.html
相关试题推荐
Noonedied,butinamatterofhours,abillion-dollarassethadbecomeabilli
Amongalltheleisureactivities,sporthasbecomeanimportantoptionforthep
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
Althoughhehasbecomerich,heisstillvery_________ofhismoney.A、economicB、
随机试题
Words5000istheonlybookthat______thesewords.A、explainB、explainsC、toex
[originaltext]M:IjustwonderwhyJanetneverbecomesanactressintheadvert
Learninganotherlanguagegivesthelearnertheabilitytostepinsidethem
学生军事训练工作,必须(),注重实际效果、实施分类指导的方针。A.围绕服务国家
简述运输的发展趋势
下面对高效团队的表述,正确的有()。A.高效团队要保证每个成员了解要达到的目
与羊水过少有关的因素是A.胎儿消化道闭锁 B.胎儿泌尿道畸形 C.妊娠合并糖
下列属非必需氨基酸的是()A.赖氨酸 B.亮氨酸 C.色氨酸 D.
3,6,3,3,( ),A.6 B.3 C.2 D.1
二极管应用电路如图所示,图中,uA=1V,uB=5V,设二极管均为理想器件,则输
最新回复
(
0
)