Some scientists warn that ice near the Earth’s Poles may indeed be melting. This “polar meltdown” may be the first sign that the Earth is heating up. We could be in very serious trouble if this trend continues. It is estimated that a meltdown of as little as 10 percent of Antarcti...
根据第二段中的“the carbon balance of the Amazon rainforest is damaged largely due to large-scale (大规模的) human disturbance to the Amazon ecosystem(由于人类对亚马逊生态系统的大规模干扰,亚马孙雨林的碳平衡受到很大破坏)”可知,亚马孙雨林的碳失衡主要是由大规模人类活动造成的,故选C。【小题3】细节...
根据第三段中的All of this extra carbon needs to go somewhere.So far,land plants and the ocean have taken up about 55 percent of it,(所有这些多余的碳都需要去某个地方。到目前为止,陆地植物和海洋已经占据了其中的55%)可知,陆地植物和海洋吸收了55%的多余的碳,由此可以推断出,超过一半的多余的碳被...
CO2-emissions from human activities have caused the concentration of carbon dioxide in the Earth’s atmosphere to go up from around 275 parts per million (ppm) before the industrial revolution to over 410 in 2020. A 50 % increase. According to the UN, greenhouse gas concentrations are rising...
It is widely believed that humans exert a harmful impact on the natural environment, especially when it comes to releasing greenhouse gases into the atmosphere. And so there is some alarm that the amount of carbon dioxide (CO2) in the atmosphere has risen by 25-30 percent in the last 200 ...
CO2concentration. This has led to conclusions of the kind that a certain increasing part of anthropogenic emissions will remain in the atmosphere forever. The frequently used notion of “airborne fraction”, which is the part of anthropogenic emissions remaining in the atmosphere, seems to suggest ...
At local levels, this effect can increase the temperature so that it is 25 percent higher than what the greenhouse effect would have done on its own. (CIS的科学家们公布了一项新的研究,该研究表明,二氧化碳含量的增加会导致植物保持水分,而这些水分原本会从它们的叶子蒸发进入大气层帮助地球降温。在地方...
With DAC, CO2is "vacuumed" directly from the atmosphere, so that the CO2concentration and greenhouse effect is reduced. However, the CO2concentration in the air is only around 0.04 percent. This is about 300 times lower than what comes from the exhaust gas in a coal-fired power station....
Forests used to cover large areas of the Appalachian Mountains in the eastern United States. In the state of West Virginia, coal mining let the land there bare, without trees. Over the years, coal mining and cutting forests took over 90 percent of the red spruce (云杉) forests. ...
1)control atmosphereCO2气调 1.The current research presented some important and basic information to the research in toxicology of control atmosphere.研究了药材甲(Stegobium paniceum)、烟草甲(Lasioderma serricorne)和咖啡豆象(Araecerus fasciculatus)3种中药材储藏期害虫谷胱甘肽转移酶的酶活性,探讨了该酶...