首页
登录
职称英语
Why do the changes in climate occur? [originaltext] Today I want to talk abou
Why do the changes in climate occur? [originaltext] Today I want to talk abou
游客
2023-11-14
16
管理
问题
Why do the changes in climate occur?
Today I want to talk about the Earth’s last major climatic shift, at the end of the last ice age. But first, let’s back up a moment and review what we know about climatic change in general. We defined "climate" as consistent patterns of weather over significant periods of time.
In general, changes in climate occur when the energy balance of the Earth is disturbed. Solar energy enters the Earth’s atmosphere as light and is radiated by the Earth’s surface as heat. Land, water, and ice each affect this energy exchange differently. The system is so complex that, to date, our best computer models are only crude approximations—and are not sophisticated enough to test hypotheses about the causes of climatic change. Of course, that doesn’t keep us from speculating. For instance, volcanic activity is one mechanism that might affect climatic change. (12)When large volcanoes erupt, they disperse tons of particles into the upper atmosphere, where the particles then reflect light. Since less light is entering the system of energy exchange, the result would be a cooling of the Earth’s surface.
Of course, this is just one possible mechanism of global climate change. In all probability, (13) a complete explanation would involve several different mechanisms operating at the same time.
选项
A、Because the energy system is complicated.
B、Because land, water, and ice each affect the energy exchange differently.
C、Because the energy balance of the Earth is disturbed.
D、Because solar energy is radiated by the Earth’s surface as heat.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3185325.html
相关试题推荐
FoodwasteinSeattleisfinallymadeintoakindof[br][originaltext](11
FoodwasteinSeattleisfinallymadeintoakindof[br][originaltext](11
Themanstopstotakehisdogoutsidetodoexercisebecause[br][originaltext
Themanstopstotakehisdogoutsidetodoexercisebecause[originaltext]M:Th
WhatdoestheMinisterwanttokeepaneyeon?[br][originaltext]RussianE
Whatisthefocusofthenews?[originaltext]FINAsaidGreekgovernmentoffi
HowmanyapartmentswillbebuiltinHarHoma?[originaltext]Israelhasanno
Whichfonmswasthebasisforphotography?[br][originaltext]Thecamerais
WhatisthefindingofHarvardUniversity’sstudy?[br][originaltext]Astu
WhatisthefindingofHarvardUniversity’sstudy?[br][originaltext]Astu
随机试题
Theprivatecarisassumedtohavewidenedourhorizonsandincreasedourm
Youareaprofessionallawyer,so,youhavetoputupallyouremotionsandhand
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchang
一般胎动消失后多长时间内胎心也会消失A.24小时 B.28小时 C.29小时
请简述《普通高中美术课程标准(实验)》的课程目标。
绝句二首(其一) 杜甫 迟日江山丽,春风花草香。泥融飞燕子,沙暖睡鸳鸯。
道路违法运输行政处罚的主体是()。A:各级政府交通主管机关 B:各级政府交通主
关于物权法定原则的说法,正确的有( )。A.当事人可以创设新类型的物权 B.
按照费用构成要素划分的建筑安装工程费,下列费用中属于企业管理费的有( )。A.
最新回复
(
0
)