首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Rising temperatures and overfishing in the pristine (未受污染的) waters around the Antarctic could see king penguin populations pushe
Rising temperatures and overfishing in the pristine (未受污染的) waters around the Antarctic could see king penguin populations pushe
admin
2021-01-08
33
问题
Rising temperatures and overfishing in the pristine (未受污染的) waters around the Antarctic could see king penguin populations pushed to the brink of extinction by the end of the century, according to a new study. The study’s report states that as global warming transforms the environment in the world’s last great wilderness, 70 percent of king penguins could either disappear or be forced to find new breeding grounds.
Co-author Celine Le Bohec, from the University of Strasbourg in France, warned: "If there’re no actions aimed at halting or controlling global warming, and the pace of the current human-induced changes such as climate change and overfishing stays the same, the species may soon disappear." The findings come amid growing concern over the future of the Antarctic. Earlier this month a separate study found that a combination of climate change and industrial fishing is threatening the krill (磷虾) population in Antarctic waters, with a potentially disastrous impact on whales, seals and penguins. But today’s report is the starkest warning yet of the potentially devastating impact of climate change and human exploitation on the Antarctic’s delicate ecosystems.
Le Bohec said: "Unless current greenhouse gas emissions drop, 70 percent of king penguins— 1.1 million breeding pairs—will be forced to relocate their breeding grounds, or face extinction by 2100." King penguins are the second-largest type of penguin and only breed on specific isolated islands in the Southern Ocean where there is no ice cover and easy access to the sea. As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south. This means that king penguins, which feed on fish and krill in this body of water, have to travel further to their feeding grounds, leaving their hungry chicks for longer. And as the distance between their breeding grounds and their food grows, entire colonies could be wiped out.
Le Bohec said: "The plight of the king penguin should serve as a warning about the future of the entire marine environment in the Antarctic. Penguins, like other seabirds and marine mammals, occupy higher levels in the food chain and they are what we call bio-indicators of their ecosystems." Penguins are sensitive indicators of changes in marine ecosystems. As such, they are key species for understanding and predicting impacts of global change on Antarctic and sub-Antarctic marine ecosystems. The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce. Only a handful of islands in the Southern Ocean are suitable for sustaining large breeding colonies.
What do we learn from the findings of a separate study?
选项
A、Shrinking krill population and rising temperatures could force Antarctic whales to migrate.
B、Human activities have accelerated climate change in the Antarctic region in recent years.
C、Industrial fishing and climate change could be fatal to certain Antarctic species.
D、Krill fishing in the Antarctic has worsened the pollution of the pristine waters.
答案
C
解析
细节辨认题。定位句指出,本月早些时候,另一项研究发现,气候变化和工业捕捞的综合作用正在威胁南极水域的磷虾数量,对鲸鱼、海豹和企鹅造成潜在的灾难性影响。由此可知,工业捕捞和气候变化对某些南极物种的影响可能是致命的,故答案为C)。
转载请注明原文地址:https://kaotiyun.com/show/maP7777K
0
大学英语六级
相关试题推荐
A、Itconnectedheavywebusewithhighbloodpressure.B、Itinvolved134youngpeoplewithhealthproblems.C、Itshowedthatboy
A、Schoolsuseprivatedetectionservices.B、Teachersdiscussessaytopicswiththeirstudents.C、Teachersaskstudentstoturni
A、Theycaretoomuchaboutpeopletheylove.B、Theyaretroubledbywhatotherssay.C、Theyaremoreeasilytoberatedbyother
A、Itwillmakeconflictsbetweenpeople.B、Itwillhaveabadimpactonbrains.C、Itisawasteoftimeandenergy.D、Itisaki
Peoplecannowavoidhavingtosortthroughalbumsfromseveraldifferentfriendswhentryingtoreliveparties,weddingsandot
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Carmakershavelongusedsextoselltheirproducts.Recently,however,bothBMWandRenaulthavebasedtheirlatestEuropeanm
TheHistoryofChineseAmericans[A]ChinesehavebeenintheUnitedStatesforalmosttwohundredyears.Infact,theChines
ConradHiltonreallywantedtobeabanker.Instead,hesuccessfullychangedthe【C1】______purchaseofaTexaslow-endhotelinto
Insuchachanging,complexsocietyformerlysimplesolutionstoinformationalneedsbecomecomplicated.Manyoflife’sproblems
随机试题
与宋元话本相比,“三言”在艺术表现方面有哪些提高?
与肺癌发病有关的最重要的危险因素是
《公路水运工程安全生产监督管理办法》(交通运输部令2017年第25号)已于2017年08月01日起施行,其编制的依据是()。
当事人在合同中没有约定违约金或者损失赔偿额的计算方法的,损失赔偿额应当相当于因违约所造成的损失,包括合同履行后可以获得的利益,但不得超过()。
()是社会治安综合治理的首要环节,是落实综合治理其他措施的前提条件。
不安抗辩权,是指当事人互负债务,有先后履行顺序的,先履行的一方有确切证据表明另一方丧失履行债务能力时,在对方没有履行或者没有提供担保之前,有权中止合同履行的权利。规定不安抗辩权是为了切实保护当事人的合法权益,防止借合同进行欺诈,促使对方履行义务。以下行使了
标志着“文化大革命”在中央和全国推行得到正式批准的是()。
简述投放危险物质罪与污染环境罪的区别。
boxedcereals
请在【答题】菜单下选择【进入考生文件夹】命令,并按照题目要求完成下面的操作。注意:以下的文件必须保存在考生文件夹下。在考生文件夹下打开文档WORD.DOCX,按照要求完成下列操作并以该文件名(WORD.DOCX)保存文档。某高
最新回复
(
0
)