首页
登录
职称英语
The climate of Earth is changing. Climatologists are confident that over the
The climate of Earth is changing. Climatologists are confident that over the
游客
2025-04-24
38
管理
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 humankind. 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 in 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 geographic distribution of major vegetation types--savannas, forests, and tundra. 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 temperature have increased at a faster rate. In this issue, Alward et al. report on the different sensitivities of rangeland plants to minimum temperatures increases. [br] In subsequent paragraphs, we may expect the writer of this passage to ______.
选项
A、discuss the global impacts of temperatures increases
B、present a point of view which supports the idea of the second paragraph
C、introduce Alward’s report on the different sensitivities of rangeland plants to minimum temperatures increases
D、further illustrate the causes of the global average surface temperature increases
答案
C
解析
本文最后一句提到了奥尔沃德(Alward)等人的报告,从文章的连贯性考虑,作者会在随后的段落中进一步介绍该报告的详细内容。
转载请注明原文地址:http://tihaiku.com/zcyy/4051931.html
相关试题推荐
Itisstrictly_____thataccesstoconfidentialdocumentsisdeniedtoallbuta
TheclimateofEarthischanging.Climatologistsareconfidentthatoverthe
TheclimateofEarthischanging.Climatologistsareconfidentthatoverthe
TheclimateofEarthischanging.Climatologistsareconfidentthatoverthe
InthePacificNorthwest,asclimateandtopographyvary,sodothespeciesthat
Itisstrictly______thataccesstoconfidentialdocumentsisdeniedtoallbut
Thepoliceinspector,havingreceivednewinformationfromaconfidentialsource
Ifeelquiteconfidentin______Mr.Jacksontoyouforthevacantpostofresearc
TheclimateofEarthischanging.Climatologistsareconfidentthatoverthe
TheclimateofEarthischanging.Climatologistsareconfidentthatoverthe
随机试题
术后呼吸功能不全常见的原因有()A.PaCO2过低 B.体温过低 C.伤
影响车险保费的浮动系数的因素包括()。A.折扣系数 B.耗油量系数 C
根据上图,下列说法正确的是:()A.“十五”时期粮食产量逐年上升 B.
A.阳中之阳 B.阴中之阴 C.阳中之阴 D.阴中之阳 E.阴中之至阴以
基础测绘成果和国家投资完成的其他测绘成果,用于( )的,应当无偿提供。A.进行
细胞色素P450酶(CYP)系中最大的家族是 A.C.YP1 B.C.Y
某城市小区,三面临城市干道,其南侧为支路,总用地为14.5hm2。现状市政管线已
材料1 传统安全威胁犹如挥之不去的梦魇,非传统安全威胁则像“达摩克里斯之剑
线粒体内膜两侧形成质子梯度的能量来源是A.磷酸肌酸水解 B.ATP水解 C.
最新回复
(
0
)