苔原燃烧也可能释放出更多的有机的碳,二氧化碳目前储存在土壤中,这样将会到大气层中。
Tundra burning may also release more organic carbon, a greenhouse gas currently stored in the soil, into the atmosphere.
那么,在这样极端恶劣的环境下,究竟是什么让那些有机的碳基分子得以幸存并最终进化成生命?
So, under those extreme circumstances, what allowed the organic, carbon-based molecules to hang on and, ultimately, develop into life?
研究是克罗宁教授项目的一部分,用以表明,无机化学化合物能够自我复制和不断进化,就像有机的碳基生物细胞一样。
The research is part of a project by Prof Cronin to demonstrate that inorganic chemical compounds are capable of self-replicating and evolving - just as organic, biological carbon-based cells do.
有机化合物的分子里含碳。
总体而言,与传统农场相比,有机农场往往会存储更多的土壤碳,土壤更优质,并减少土壤侵蚀。
Overall, organic farms tend to store more soil carbon, have better soil quality, and reduce soil erosion compared to their conventional counterparts.
放射性碳年代测定法涉及到了化学分析,与文物中残留的有机物成分所释放的放射性碳的含量测定有关。
Radiocarbon dating had to do with chemical analysis, something to do with measuring the amount of radiocarbon that's left in organic stuff.
他定期从三种深度收集土壤样本,分析其中的有机碳。
He periodically collects soil samples at three depths and analyzes them for organic carbon.
高兰尼也在改进CQESTR模型,也就是一种电脑模型,这种模型能够模拟气候、土壤类型、耕作制度和其他有关土壤中有机碳的管理措施。
Gollany also is upgrading CQESTR, a computer model that simulates the effects of climate, soil type, cropping systems, and other management practices on soil organic carbon.
土壤中的有机碳是土壤是否能够保持湿度,提供营养和维持生产能力的重要指标。
Soil organic carbon is a key indicator of how well soil will hold moisture, provide nutrients, and remain productive.
为了减少运输过程的碳排放,有机食品通常使用动物粪便作为肥料。
In addition to the carbon savings in transportation, such foods rely on animal manure as fertilizer.
这样的火星环境也许包含了一些基本的生命要素——包括水,有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life-including water, organic carbon and a source of energy to sustain the microbes' metabolism.
人们谈论减少伐木和林地退化造成的碳排放(REDD)已经几年了,但哥本哈根峰会让我们第一次有机会看到它在全球范围内得到应用。
REDD or Reducing Emissions from Deforestation and Degradation (Redd) has been talked about for years but the summit at Copenhagen is the first opportunity to see it implemented on a global scale.
这笔经费将用于基础研究,新产品研发和发光二极管、含碳有机发光二极管的制造方面。
The cash will go toward basic research, product development and manufacturing of light-emitting diodes (LEDs) and carbon-containing organic light-emitting diodes (OLEDs).
这样的火星环境也许包含了一些基本的生命要素——包括水,有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life — including water, organic carbon and a source of energy to sustain the microbes' metabolism.
俄勒冈东部的土壤所含的有机碳相对较低,因此科学家正在开展研究,防止有机碳进一步流失。
Soils in eastern Oregon are relatively low in organic carbon, and research is under way to prevent further losses.
2005年,“卡西尼”太空探测器飞越土卫二时的勘测资料显示其表面存在碳、氢、氮、氧等元素——这些有机分子被认为是生命形成的必要条件。
Observations from the Cassini probe's 2005 flyby of Enceladus suggest the presence of carbon, hydrogen, nitrogen and oxygen - organic molecules thought to be necessary to develop life.
碳的一个同位素碳14也是稳定的,氧的情形也是这样,因此生命必须的有机反应成为可能。
An isotope of carbon known as carbon-14 would also be stable, as would a form of oxygen, so the organic reactions necessary for life would be possible.
但是碳足迹很少的有机食品如果运输到外地,则会失去其优势。因为在全国范围内运输批量生产食品的物流系统效率不高。
But the carbon-footprint benefits of organic foods become less clear over larger distances because of the efficiency of the nationwide distribution systems for mass-produced foods.
之前的研究表明,由草地转化成玉米地或其他能源作物用地的农田会释放出大量有机碳。
Previous studies predicted massive releases of organic carbon from fields converted from grass to corn or other energy crops.
在如此宽广的岩浆岩床烘烤下的有机沉淀物大大增加了甲烷和含碳气体的释放。
That vastly increases the volume of sediments the hot rock can cook and from which methane and other carbon-rich gases can be released.
第二,他指出“如果植物选择合适,它们就有机会将大量的碳转入地下进行长期封存”。
Second, "if they are the right kind of plants, they have a chance to transfer a lot of carbon underground for long-term sequestration, " he says.
柴油车尾气粒子,是城市烟雾的主要组成部分,是由外表包裹着有机化学和五金的碳芯组成的。
Diesel exhaust particles, a major part of urban smog, consist of a carbon core coated with organic chemicals and metals.
科学家们在一块六英里见方的试验田内进行了勘测,他们发现那些有机碳来自筑造防洪大堤取土用的浅塘,有机碳化合物沉淀至塘底并慢慢渗入地下。
Using a six-square-mile test plot, they found that the organic carbon comes from shallow ponds that were dug to provide soil for flood protection.
黑碳并不是单独被排放的,它被排放的同时还混合了许多别的物质——比如,有机分子还有各种各样的硫氧化物和氮氧化物。
Black carbon is not emitted alone, but mixed with other things-organic molecules and various oxides of sulphur and nitrogen.
这些蓄水层是在更新世形成的,它们形成于12000至250万年之前,并且缺少能够使砷渗入水中的有机碳。
These aquifers were created during the Pleistocene epoch, between 12, 000 and 2.5 million years ago, and lack the organic carbon that is needed for arsenic to leach into water.
这些蓄水层是在更新世形成的,它们形成于12000至250万年之前,并且缺少能够使砷渗入水中的有机碳。
These aquifers were created during the Pleistocene epoch, between 12,000 and 2.5 million years ago, and lack the organic carbon that is needed for arsenic to leach into water.
这些蓄水层是在更新世形成的,它们形成于12000至250万年之前,并且缺少能够使砷渗入水中的有机碳。
These aquifers were created during the Pleistocene epoch, between 12,000 and 2.5 million years ago, and lack the organic carbon that is needed for arsenic to leach into water.
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