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Some scientists speculate that changes in atmospheric methane were responsible for some abrupt global warming events in the past such as the one at the end of the geologic period known as the Younger Dryas. There is good evidence that large quantities of methane have been released quickly in the past through natural processes; however, methane is a relatively (i)______ molecule in the atmosphere and thus (ii)______ through chemical reactions with other compounds. The effect of even a large increase would therefore be (iii)______.
- Blank(i)
- important
- unstable
- abundant
- Blank(ii)
- not easily altered
- eventually regenerated
- fairly quickly destroyed
- Blank(iii)
- accelerated
- ephemeral
- catastrophic
unstable , fairly quickly destroyed , ephemeral 显示答案
· 相关考点
取同-因果逻辑 取反-让步转折
取同-因果逻辑
取反-让步转折
以上解析由 考满分老师提供。
