Laughlin acknowledges that "a lot of responsible people" are worried about atmospheric concentrations of carbon dioxide from bur

admin2016-03-22  79

问题     Laughlin acknowledges that "a lot of responsible people" are worried about atmospheric concentrations of carbon dioxide from burning fossil fuels. This has, he says, "the potential" to modify the weather by raising average temperatures several degrees centigrade and that governments have taken " significant, although ineffective," steps to slow the warming. " On the scales of time relevant to itself, the earth doesn’ t care about any of these governments or their legislation. "
    Someday, all the fossil fuels that used to be in the ground will be burned. After that, in about a millennium, the earth will dissolve most of the resulting carbon dioxide into the oceans. The dissolving will leave the concentration in the atmosphere only slightly higher than today’ s. Then " over tens of millennia, or perhaps hundreds" the earth will transfer the excess carbon dioxide into its rocks, "eventually returning levels in the sea and air to what they were before humans arrived on the scene. " This will take an eternity as humans reckon, but a blink in geologic time.

选项

答案 克劳林承认,有许多负责任的人们对大气层二氧化碳浓度感到担忧。他说,这有可能使全球平均温度升高数度从而改变天气,各国政府采取了重大但不是很有效的措施来推迟全球变暖。克劳林称:“就地球的时间度量而言,地球并不关心任何政府或法律。” 总有一天,所有埋藏在地下的化石燃料都将会被烧尽。在那之后,大约一千年之内,地球会将产生的大部分二氧化碳溶解到海洋里。这样一来,大气层中二氧化碳的浓度只比现在稍微高一些。之后,“过几万年甚至几十万年,”地球会把多余的二氧化碳转移到岩石中。“最终,海洋和大气中二氧化碳的浓度又回到了人类出现之前的水平。”按照人类的估算,这个过程将需要一段漫长的时间,但是在地质时期这只是一瞬间。

解析
转载请注明原文地址:https://kaotiyun.com/show/4l8a777K
0

最新回复(0)