A favorite canard of climate change denialist trolls is to trivialize the amount of carbon dioxide in the atmosphere; how could something that is only 0.04% of the atmosphere drive global warming? Well, Google is your friend:“About 99 percent of the atmosphere is made of oxygen and nitrogen, which cannot absorb the infrared radiation the Earth emits. Of the remaining 1 percent, the main molecules that can absorb infrared radiation are CO2 and water...
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