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
57
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] 【L15】
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
critical
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3315218.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
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
AsWardellnotes,oncemanagerialdecisionsareknown,theythenbecomethebasi
Dolphins,thoughusuallyfriendly,canbecomeoffensivewhenthreatened.A、violen
Ithasbecomefashionabletoissuedireprojectionsofdecliningprosperityb
随机试题
A—remotecontrolB—televisionsignalC—televisionstation
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
角色疗法
期限套利的理论依据是()A.持有成本理论 B.买入价差理论 C.卖出价
香豆素8-异戊烯基和7-羟基缩合形成呋喃环,称为A.角型吡喃香豆素 B.角型香
动态悬浮粒子最大允许数为"≥0.5μm者3.5×10个/米,≥5μm者2000个
肝癌非手术治疗首选为A.肝动脉插管化疗 B.全身化学药物治疗 C.放射治疗
心理发育停滞是引发心理问题的()。A.社会原因 B.认知原因 C.文化原因
N电器公司成立于1992年,在过去的二十多年中,由最初的总资产几百万元发展成为现
急性肾功能衰竭少尿期结束的标志是指24小时尿量至少增加至( )。A.250ml
最新回复
(
0
)