作业帮Warmer weather will most likely make it impossible for polar bears to survive on the shoes of Hudson's Bay,Canada,in 20to 30years.So says the worlds 'best _known polar expert,lan Stirling,Who has studied polar bears as a biologists for 41years_longer
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Warmer weather will most likely make it impossible for polar bears to survive on the shoes of Hudson's Bay,Canada,in 20to 30years.So says the worlds 'best _known polar expert,lan Stirling,Who has studied polar bears as a biologists for 41years_longer
Warmer weather will most likely make it impossible for polar bears to survive on the shoes of Hudson's Bay,Canada,in 20to 30years.So says the worlds 'best _known polar expert,lan Stirling,Who has studied polar bears as a biologists for 41years_longer than anyone else in the field.
The loss of Arctic ice is the main thret to Canada 's southern _most polar bear populations.An estimated 1,600 bears live in the region,according to satellite images.Stirling said,"that's faster than most scientific models 翻译
Warmer weather will most likely make it impossible for polar bears to survive on the shoes of Hudson's Bay,Canada,in 20to 30years.So says the worlds 'best _known polar expert,lan Stirling,Who has studied polar bears as a biologists for 41years_longer
温暖的天气将很可能使它不可能为北极熊在哈德逊湾,加拿大鞋生存,20到30年.所以说,世界上最好的_known极地专家,斯特灵,谁研究了北极熊作为一个生物学家41years_longer比在现场的任何人.北极海冰的消失是加拿大南部的_most北极熊种群的主要thret.估计1600熊生活在该地区,根据卫星图像.斯特灵说,"；那是比最科学的更快