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
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperatur
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperatur
admin
2013-01-20
76
问题
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperature has increased by about half a degree Celsius. This warming is thought to be at least partly the result of human activities, such as the burning of fossil fuels and the clearing of forests for agriculture. As the global population grows and national economies expand, the global average temperature is expected to continue increasing by an additional 1.0℃ to 3.5℃ by the year 2100.
Climate change is one of the most important environmental issues facing human- kind. Understanding the potential impacts of climate change for natural ecosystems is essential if we are going to manage our environment to minimize the negative consequences of climate change and maximize the opportunities that it may offer. Because natural ecosystems are complex, nonlinear systems, it follows that their responses to climate change are likely to be complex. Climate change may affect natural ecosystems m a variety of ways. In the short term. climate change can alter the mix of plant species in land ecosystems such as grasslands. In the long term, climate change has the potential to dramatically alter the geo- graphic distribution of major vegetation types savannas, forests, and climate change can also potentially alter global ecosystem processes, including the cycling of carbon, nitrogen, phosphorus, and sulfur. Moreover. changes in these ecosystem processes can affect and be affected by changes in the plant species of the ecosystem and vegetation type. All of the climate change-induced alterations of natural ecosystems affect the services, that these ecosystems provide to humans.
The global average surface temperature increase of half a degree Celsius observed over the past century has been in part due to differential changes in daily maximum and minimum temperatures, resulting in a narrowing of the diurnal temperature range. Decreases in the diurnal temperature range were first identified in the United States, where large-area trends showed that maximum temperatures have remained constant or increased only slightly, whereas minimum temperatures have increased at a faster rate. In this issue, Al-ward et al. report on the different sensitivities of rangeland plants to minimum temperature increases.
The word "diurnal" (Line 3, Para. 3) is closest in meaning to______.
选项
A、day-and-night’s
B、everyday
C、two days’
D、yearly
答案
B
解析
该题为词语释义题。从上文的“daily”可以推断出该词的含义。
转载请注明原文地址:https://kaotiyun.com/show/lO2O777K
0
考博英语
相关试题推荐
DealingwithDepression(51)Contrarytowhatmanypeoplethinkdepressionisnotanormalpartofgrowingolder.Norisith
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecountry.(67)Admissionsofficersareporingessaysan
KunmingisuniqueinChina_____itstemperaturevarieslittle,summerorwinter.
ThechangesingloballyaveragedtemperaturethathaveoccurredattheEarth’ssurfaceoverthepastcenturyaresimilarinsize
ThechangesingloballyaveragedtemperaturethathaveoccurredattheEarth’ssurfaceoverthepastcenturyaresimilarinsize
Thereareover6,000differentcomputerandonlinegamesintheworldnow.Asegmentofthemareconsideredtobebotheducation
______youcannotpickmeupattheairport,pleasecallmeimmediately.
Becauseofitsintimacy,radioisusuallymorethanjustamedium;itis_____.
Terrorismhasbecomesowidespreadthatitisnowimpossibletodismissitastheactionofafewcrazypeople.Infact,terroris
随机试题
建立肾内髓部渗透压梯度的主要溶质是
全科医疗与专科医疗的联系可以概括为
A.通风、干燥处B.通风、阴凉处C.阴凉、干燥处D.密闭贮藏E.石灰缸内含挥发油多的饮片应贮存于
信用风险组合模型被广泛应用于国际银行业中,其中()直接将转移概率与宏观因素的关系模型化,然后通过不断加入宏观因素冲击来模拟转移概率的变化,得出模型的一系列参数值。
在财政授权支付方式下,行政、事业单位应设置()科目结算财政资金。
A公司2006年12月31日的股本为10000000股,面值为1元,资本公积(股本溢价)50000000元,盈余公积80000000元。经股东大会批准,A公司以现金回购本公司股票5000000股并注销。假定A公司按每股3元回购股票,不考虑其他因素,则应冲
西瓜:水果
Thisweekendmarks25yearssincethepublicationoftheU.S.DepartmentofEducation’sexplosivereportANationatRisk.Its
Losingajobornotbeingabletofindonealmostalwaysbringsunwelcomechanges.Ifyou’velostajob,thefirstfeelingisof
ReachingnewpeaksofpopularityinNorthAmericaisIcebergWater,whichisharvestedfromicebergsoffthecoastofNewfoundl
最新回复
(
0
)