首页
登录
职称英语
Massive rubbish dumps and sprawling landfills constitute one of the more unc
Massive rubbish dumps and sprawling landfills constitute one of the more unc
游客
2023-08-10
56
管理
问题
Massive rubbish dumps and sprawling landfills constitute one of the more uncomfortable impacts that humans have on wildlife. They have led some birds to give up on migration. Instead of flying thousands of miles in search of food, they make the waste sites their winter feeding grounds.
Researchers in Germany used miniature GPS tags to track the migrations of 70 white storks (鹳) from different sites across Europe and Asia during the first five months of their lives. While many birds travelled along well-known routes to warmer climates, others stopped short and spent the winter on landfills, feeding on food waste, and the multitudes of insects that thrive on the dumps.
In the short-term, the birds seem to benefit from overwintering (过冬) on rubbish dumps. Andrea Flack of the Max Planck Institute found that birds following traditional migration routes were more likely to die than German storks that flew only as far as northern Morocco, and spent the winter there on rubbish dumps. "For the birds it’s a very convenient way to get food. There are huge clusters of organic waste they can feed on," said Flack. The meals are not particularly appetising, or even safe. Much of the waste is discarded rotten meat, mixed in with other human debris such as plastic bags and old toys.
"It’s very risky. The birds can easily eat pieces of plastic or rubber bands and they can die," said Flack. "And we don’t know about the long-term consequences. They might eat something toxic and damage their health. We cannot estimate that yet. "
The scientists tracked white storks from different colonies in Europe and Africa. The Russian, Greek and Polish storks flew as far as South Africa, while those from Spain, Tunisia and Germany flew only as far as the Sahel.
Landfill sites on the Iberian peninsula have long, attracted local white storks, but all of the Spanish birds tagged in the study flew across the Sahara desert to the western Sahel. Writing in the journal, the scientists describe how the storks from Germany were clearly affected by the presence of waste sites, with four out of six birds that survived for at least five months overwintering on rubbish dumps in northern Morocco, instead of migrating to the Sahel.
Flack said it was too early to know whether the benefits of plentiful food outweighed the risks of feeding on landfills. But that’s not the only uncertainty. Migrating birds affect ecosystems both at home and at their winter destinations, and disrupting the traditional routes could have unexpected side effects. White storks feed on locusts (蝗虫) and other insects that can become pests if their numbers get out of hand. "They provide a useful service," said Flack. [br] What can be inferred about the Spanish birds tagged in the study?
选项
A、They gradually lose the habit of migrating in winter.
B、They prefer rubbish dumps far away to those at home.
C、They are not attracted to the rubbish dumps on their migration routes.
D、They join the storks from Germany on rubbish dumps in Morocco.
答案
C
解析
推理题。第六段第一句指出,伊比利亚半岛上的垃圾填埋场一直吸引着当地的白鹳,但研究中带标记的所有西班牙鸟类都穿越了撒哈拉沙漠飞到了萨赫勒西部地区,说明这些鸟类没有被迁徙路上的垃圾填埋场所吸引,故答案为C。这些白鹳全飞到了萨赫勒西部地区,说明它们并未放弃迁徙,A项与原文不符,故排除。B项与原文意思相悖,故排除。D项原文未提及,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/2912808.html
相关试题推荐
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethat
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethat
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethat
______(不管中国变得多么强大),itwillconstitutenothreattoanyothercountry.Nomatter
Massiverubbishdumpsandsprawlinglandfillsconstituteoneofthemoreunc
Massiverubbishdumpsandsprawlinglandfillsconstituteoneofthemoreunc
大规模地massively;onalargescale
Massivechangesinalloftheworld’sdeeplycherishedsportinghabitsareu
Massivechangesinalloftheworld’sdeeplycherishedsportinghabitsareu
Massivechangesinalloftheworld’sdeeplycherishedsportinghabitsareu
随机试题
Aslitigationgrowsmorecomplex,theneedthatexpertsexplaintechnicalissues
[originaltext]WhenthetopU.S.oilcompaniesannouncedhugeincreasesinp
[originaltext]W:SoTim,Imustcongratulateyou.Ihearyounolongersmoke.M
承包人质量责任包括()。A.应当依法取得相应等级的资质证书,并在其资质等级
慢性肝炎的病因学分类中错误的一项是A.自身免疫 B.醇 C.药物和毒物 D
三方或以上交易对手之间的类似交易可以纳入买入返售或卖出回购业务管理和核算。(
下列各项固定资产中,不需要计提折旧的是()A.因大修而停止使用的固定资产 B.
某河流发育三级阶地,其剖面示意图如图所示。三级阶地均为砂层,各自颗粒组成不同,含
建设单位与某建筑工程公司签订了一份施工承包合同。合同约定,建筑工程公司先进行施工
某咨询机构受政府投资主管部门委托,对某化工项目进行核准评估。经过现场调查和分析论
最新回复
(
0
)