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
Despite decades of scientific research, no one yet knows how much damage human activity is doing to the environment. Humans are
Despite decades of scientific research, no one yet knows how much damage human activity is doing to the environment. Humans are
admin
2016-01-30
75
问题
Despite decades of scientific research, no one yet knows how much damage human activity is doing to the environment. Humans are thought to be responsible for a whole host of environmental problems, ranging from global warming to ozone depletion. What is not in doubt, however, is the devastating effect humans are having on the animal and plant life of the planet.
Currently, an estimated 50, 000 species become extinct every year. If this carries on, the impact on all living creatures is likely to be profound, says Dr. Nick Middleton, a geographer at Oxford University. " All species depend in some way on each other to survive. And the danger is that, if you remove one species from this very complex web of interrelationships, you have very little idea about the knock-on effects on the ecosystem. So, if you lose a key species, you might cause a whole cascade of other extinctions. "
Complicating matters is the fact that there are no obvious solutions to the problem. Unlike global warming and ozone depletion — which, if the political will was there, could be reduced by cutting gas emissions — preserving biodiversity remains an intractable problem.
The latest idea is " sustainable management" , which is seen as a practical and economical way of protecting species from extinction. This means humans should be able to use any species of animal or plant for their benefit, provided enough individuals of that species are left alive to ensure its continued existence.
For instance, instead of depending on largely ineffective laws against poaching, it gives local people a good economic reason to preserve plants and animals. In Zimbabwe, there is a sustainable management project to protect elephants. Foreign tourists pay large sums of money to kill these animals for sport. This money is then given to the inhabitants of the area where the hunting takes place. In theory, locals will be encouraged to protect elephants, instead of poaching them — or allowing others to poach them — because of the economic benefit involved.
This sounds like a sensible strategy, but it remains to be seen whether it will work. With corruption endemic in many developing countries, some observers are skeptical that the money will actually reach the people it is intended for. Others wonder how effective the locals will be at stopping poachers.
There are also questions about whether sustainable management is practical when it comes to protecting areas of great biodiversity such as the world’s tropical forests. In theory, the principle should be the same as with elephants — allow logging companies to cut down a certain number of trees, but not so many as to completely destroy the forest.
Sustainable management of forests requires controls on the number of trees which are cut down, as well as investment in replacing them. But because almost all tropical forests are located in countries which desperately need revenue from logging, there are few regulations to do this. Moreover, unrestricted logging is so much more profitable that wood prices from managed forests would cost up to five times more — an increase that consumers, no matter how "green" , are unlikely to pay.
For these reasons, sustainable management of tropical forests is unlikely to become widespread in the near future. This is disheartening news. It’s estimated these forests contain anything from 50 to 90 percent of all animal and plant species on Earth. In one study of a five-square-kilometer area of rain forest in Peru, for instance, scientists counted 1, 300 species of butterflies and 600 species of birds. In the entire continental United States, only 400 species of butterflies and 700 species of birds have been recorded.
Scientist professor Norman Myers sees this situation as a gigantic "experiment we’re conducting with our planet". "We don’t know what the outcome will be. If we make a mess of it, we can’t move to another planet ... It’s a case of one planet, one experiment. "
What is NOT true about the idea of sustainable management?
选项
A、It bans any form of poaching and logging to protect plants and animals.
B、It allows humans to cut plants and kill animals for economic benefits.
C、It ensures the survival of each species by leaving enough individuals alive.
D、It encourages humans to protect species from extinction for economic gain.
答案
A
解析
细节判断题。根据原文第五段中…instead of depending on largely ineffective laws against poaching,it gives local people a good economic reason to preserve plants and animals.可以判断出,sustainablemanagement并不是禁止一切打猎和伐木;其余选项在文章中均能找到支持信息。故答案为A。
转载请注明原文地址:https://kaotiyun.com/show/6IGO777K
0
考博英语
相关试题推荐
Englishremainsadominantanduniversallanguage,whichpresently【51】asaconnection-linkbetweengreatvarietiesofdif
Aninvisibleborderdividesthosearguingforcomputersintheclassroomonthebehalfofstudents’careerprospectsandthosea
Theconceptofpersonalchoiceinrelationtohealthbehaviorsisanimportantone.Anestimated90percentofallillnessesmay
EINinoisthetermusedfortheperiodwhenseasurfacetemperaturesareabovenormalofftheSouthAmericancoastalongtheeq
EINinoisthetermusedfortheperiodwhenseasurfacetemperaturesareabovenormalofftheSouthAmericancoastalongtheeq
Inaperfectlyfreeandopenmarketeconomy,thetypeofemployer—governmentorprivate—shouldhavelittleornoimpactonthee
Nixonwasamanoflimitedmeans,andwhenhewonhisSenateseat,agroupofbusinessmenhadpubliclysolicitedfundstoenable
Businessandgovernmentleadersalsoconsidertheinflationratetobeanimportantgeneralindicator.Inflationisaperiodof
Duringthelastthirtyyears,theinternationaleconomyhasexperiencedabasicchange.ImprovementsintheInternetandotherc
Thepeoplewhoobjectedtothenewroadweretoldthatsinceworkhadalreadystartedtherewasnopointin______.
随机试题
党在社会主义初级阶段的基本路线可以概括为“一个中心,两个基本点”。一个中心是指【】
对于恶性黑色素瘤,其治疗应为
承包方根据协议规定提出的付款申请表主要包括()等付款内容。
某机场地基处理及土石方工程01标段石方爆破工程,占地165×104m2,爆破方量约4×106m3,其中事故标段石方爆破方量约为11×105m3。D爆破公司作为专业分包单位承包了该爆破项目。2017年11月23日7时许,D爆破公司工程爆破项目技术负
我国建设工程法律法规体系中,《建设工程质量管理条例》属于()。
采用下列何种策略时,股价上升买入股票,股价下跌卖出股票()
某汽车制造厂将排量为2.0的自产A型汽车4辆转作固定资产,6辆对外抵偿债务,上述业务的A型汽车作价为180000元/辆,国家税务总局核定的最低计税价格为190000元/辆。另外,一辆已缴纳车辆购置税的汽车,因交通事故更换底盘,国家税务总局核定的同型号新车最
按照《企业会计准则第4号一固定资产》规定,下列会计处理中不正确的有()。
It’stheholidayseasonandthatmeanskidsbythemillionsareaskingSantafortheopportunitytoblowawayenemysoldiersan
A、Therewillbeabigfamilydinner.B、Peopleburnpapermoney.C、Itisafixeddayinghostmonth.D、Peoplewearconstumesont
最新回复
(
0
)