CO2 releases into the atmosphere in a ton of ways. The largest source of natural carbon emissions is the exchange of carbon dioxide between the oceans and the atmosphere. Animals and plants also emit CO2 through the process of respiration (breathe in oxygen, breathe out CO2)....
Elevated Carbon Dioxide in the Atmosphere: What Might It Mean for Loblolly Pine Plantation Forestry 来自 国家科技图书文献中心 喜欢 0 阅读量: 93 作者:JW Groninger,KH Johnsen,JR Seiler,RE Will,DS Ellsworth,CA Maier 摘要: Research with Loblolly pine suggests that projected increases in atmospheric ...
This releases heat back into the air. But, some of that heat is trapped by the gases in the atmosphere. These heat-trapping gases are called greenhouse gases. Carbon dioxide, water vapor and methane are all examples of greenhouse gases. ...
【题目】Itisprettywellunderstood___controlstheflowofcarbondioxideinandouttheatmospheretoday. A.whatB.whenC.thatD.how 试题答案 在线课程 【答案】A 【解析】 试题分析:句意:现在人们非常清楚是什么控制着二氧化碳进出大气层。分析句子结构可知it是形式主语,后面的主语从句缺少主语,用连接代词,故选A。 练习册...
aIt is pretty well understood controls the flow of carbon dioxide in and out the atmosphere today 它相当很好被了解 今天里里外外控制二氧化碳流程大气[translate] afish oil 1240 鱼油1240年[translate] aDawn of light 光黎明[translate] aIt is pretty well understood what controls the flow of carbon ...
It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today. A.that B.when C.what D.how 试题答案 在线课程 C 【解析】分析句子结构可知:句子属于形式主语格式;另外主句中缺少主语。双重作用的引导词只能是what。 练习册系列...
MALE PROFESSOR: In fact, studies indicate that four billion years ago, carbon dioxide levels in the atmosphere were much higher than today's levels. But the studies also indicate that they weren't high enough to do the job—take up for a faint Sun. Well, then, some astronomers came up ...
Although a certain amount of carbon dioxide (CO2) occurs naturally in the Earth's atmosphere, there are several human activities that increase levels of the greenhouse gas. While some scientists are beginning to focus on rising atmospheric levels of nitrogen trifluoride, methane and soot, the produ...
a2012年将会在伦敦如期举行 正在翻译,请等待...[translate] astopper 制止者[translate] aWhat measures can be taken to prevent further increase of carbon dioxide in the atmosphere; 什么测量可以被采取防止二氧化碳进一步增加在大气;[translate]
aIt is pretty well understood what control the flow of carbon dioxide in and out the atmosphere today. 它相当很好被了解什么控制二氧化碳流程里里外外今天大气。[translate]