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
22
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 about the Southern Ocean?
选项
A、The king penguins there are reluctant to leave for new breeding grounds.
B、Its conservation is key to the sustainable propagation of Antarctic species.
C、It is most likely to become the ultimate retreat for species like the king penguin.
D、Only a few of its islands can serve as huge breeding grounds for king penguins.
答案
D
解析
细节辨认题。定位句指出,南大洋中只有少数几个岛屿适合维持大型繁殖群体的生存。D)项表述符合文义,故为答案。
转载请注明原文地址:https://jikaoti.com/ti/HUBFFFFM
0
大学英语六级
相关试题推荐
A、Itconnectedheavywebusewithhighbloodpressure.B、Itinvolved134youngpeoplewithhealthproblems.C、Itshowedthatboy
A、Saltisquitenecessaryforpeople’shealth.B、Eatingtoomuchsaltcoulddoharmtotheheart.C、Thequantityofsaltvaries
中国在鸦片战争(OpiumWar)中战败,暴露了她在军事上的落后(backwardness)和政治上的软弱。西方列强发现迫使中国接受不平等条件是轻而易举的。因而,在战后,英国和其他西方国家,包括法国、德国、俄国和美国,还有东方的日本,或单独或联合对中国发
A、Itiseasytomakefriendsbutnottruefriends.B、Itissuitableforpeoplewhoaregoodatsocializing.C、Itishelpfultot
Peoplecannowavoidhavingtosortthroughalbumsfromseveraldifferentfriendswhentryingtoreliveparties,weddingsandot
Whenyouthinkaboutthegrowthofhumanpopulationoverthelastcenturyorso,itisalltooeasytoimagineitmerelyasani
TheHistoryofChineseAmericans[A]ChinesehavebeenintheUnitedStatesforalmosttwohundredyears.Infact,theChines
Peopletravelinglongdistancesfrequentlyhavetodecidewhethertheywouldprefertogobyland,sea,orair.Hardlycananyon
Morethan15millionAmericansundergosurgeryeachyear,butsomeelectiveoperationsmaybemoreaboutthesurgeon’spreferen
Sugar—FriendVSEnemyA)Sugariseverywhere.It’sinourdrinks,it’sinourfoods,andit’shiddeninplacesweneverwouldth
随机试题
Marychangedherdollarsforthe______amountofpounds.
脓血便蛋花汤样大便,腥臭,有较多黏液
简述预算定额中电机干燥是如何考虑的?
城市客运交通枢纽的主体是()。
本着既经济合理又能确保消防安全基本要求的原则,下列对临时搭建的办公用房的防火要求中,符合规定的是()。
【2016年】下列预算中,不直接涉及现金收支的是()。
资料(一)永城集团股份有限公司(以下简称永城或公司)成立于2010年1月,是集基建建设、勘察设计与咨询服务、铁路和公路投资及运营、物资贸易等业务于一体的大型国有建筑施工企业集团。公司先后参加国内外五千余项大型工程设计与施工,经营范围覆盖到土木建筑
强制戒毒的对象为()。
对“前者是‘添足’,还有可说;后者是刖刑……”这句话中的意思理解错误的一项是:根据上下文,在空白处应填的选项是:
MsByron’scommentonherownsummerexperimentis______.Theworkoftheparticipatingopen-sourceprojectsconductedbystud
最新回复
(
0
)