首页
登录
职称英语
The planet’s wild creatures face a new threat—from yuppies (雅皮士), empty nest
The planet’s wild creatures face a new threat—from yuppies (雅皮士), empty nest
游客
2023-09-12
24
管理
问题
The planet’s wild creatures face a new threat—from yuppies (雅皮士), empty nesters and one parent families.
Biologists studying the pressure on the planet’s dwindling biodiversity today report on a new reason for alarm. Although the rate of growth in the human population is decreasing, the number of individual households is exploding.
Even where populations have actually dwindled in some regions of New Zealand, for instance— the numbers of individual households has increased, because of divorce, career choice, smaller families and longer lifespan.
Jianguo Lin of Michigan State University and colleagues from Stanford University in California report in Nature, in a paper published online in advance, that a greater number of individual households, each containing on average fewer people, meant more pressure on natural resources.
Towns and cities began to sprawl (蔓生,蔓延) as new homes were built. Each household needed fuel to heat and light it; each household required its own plumbing, cooking and refrigeration.
"In larger households, the efficiency of resource consumption will be a lot higher, because more people share things," Dr Liu said. He and his colleagues looked at the population patterns of life in 141 countries, including 76 "hotspot’ regions unusually rich in a variety of local wildlife. These hot spots included Australia, New Zealand, the US, Brazil, China, India, Kenya, and Italy. They found that between 1985 and 2000 in the "hotspot" parts of the globe, the annual 3.1% growth rate in the number of households was far higher than the population growth rate of 1.8%.
"Had the average household size remained at the 1985 level," the scientists report, "there would have been 155 million fewer households in hotspot countries in 2000.
Dr Liu’s work grew from the alarming discovery that the giant pandas living in China’s Wolong reserve are more at risk now than they were when the reserve was first established. The local population had grown, but the total number of homes had increased more swiftly, to make greater inroads into the bamboo forests.
Only around 1.75 million species on the planet have been named and described. Biologists estimate that there could be 7 million, or even 17 million, as yet to be identified. But human numbers have grown more than sixfold in the past 200 years, and humans and their livestock are now the greatest single consumer group on the planet. The world population will continue to soar, perhaps leveling off around 9 billion in the next century. Environmental campaigners have claimed that between a quarter and a half of all the species on earth could become extinct in the next century. [br] Biologists report that the biodiversity is decreasing because ______.
选项
A、more individual households are increasing greatly
B、human beings are threatening many wild creatures
C、human populations have been decreasing in recent years
D、wild creatures depend on more individual households
答案
A
解析
推理题。根据文章的前四段内容可以推断出选项A的内容是正确的。选项 B的内容过于片面,因为只能是有些做法威胁了野生动物;C、D两项内容说法文章中未提及。
转载请注明原文地址:https://tihaiku.com/zcyy/3008172.html
相关试题推荐
【S1】[br]【S3】O从语法结构看,该空应填入动词,且是动词的谓语形式而不是非谓语形式,选项中符合这一要求的词有I)threatened,E)rea
[originaltext]TheFoodandDrugAdministrationis,again,threateningtoimp
Pollution:ALifeandDeathIssueOneofthemainthemesofPlanetunderPres
【S1】[br]【S17】A、causesB、arousesC、posesD、imposesC固定搭配。posethreatto“对……构成威胁
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialr
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialr
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialr
Thediscoveryofplanetsarounddistantstarshasbecomelikespace-shuttlel
DoesGeneticResearchThreatenOurCivilLiberties?
DoesGeneticResearchThreatenOurCivilLiberties?
随机试题
MarianneHardwickwastimidandunadventurous,hervitalityconsumedbyphy
CreativeBookReportIdeasA)Areyouatalossforcreative
Fromherconversation,I______thatshehadalargefamily.A、deducedB、decided
ThreeConceptsinArtHistoryI.Commonalities-Certainchunkof【T1】_____
1NEWDELHI,India(CNN)-IndianPrimeMinisterAtalBehariVajpayee’srulingB
( )的出版标志着教育学开始成为一门独立的学科.A.《爱弥儿》 B.《教育漫
正常成人淋巴细胞占外周血白细胞分类计数的A.0.3~0.5B.0.015~0.0
关于以划拨方式取得国有建设用地使用权的说法,正确的是( )。A.必须有偿取得
贷款人应通过贷款人受托支付或借款人自主支付的方式对( )进行管理与控制。A.还
下列担保物权必须在主债权诉讼时效期限内行使的是()。A.抵押权 B.留置权
最新回复
(
0
)