水比油重,你不停地在充满油的杯子中加水,水会上升到杯口吗? |
二氧化碳破坏臭氧层,这种说法是完全错误的! CO2 is only a "green house" gas. Green house gas by definition is a gas that absorbs long wave (infrared) thermal radiation that is emmitted from the ground, while allow the shorter thermal radiation from the sun passing through. The effect has nothing to do with the ozone layer. CO2 is allegedly responsible for global warming. There is only less than 0.03 % (by volume) of CO2 in the atmosphere. At 1 atm, it is a gas from above ~-80 DegC. Yes, it is heavier than O2 and N2 (air), and you will find more CO2 close to the ground. But, don't worry, something takes it as food. We are not going to drawn in a sea of carbondioxide. |
谢谢指正。也回答了我的疑问 |
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