Reader question: I heard that carbon dioxide makes up 0.04 percent of the world's atmosphere. Not 0.4 percent or 4 percent, but 0.04 percent! How can it be so ...
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Reader question: I heard that carbon dioxide makes up 0.04 percent of the world's atmosphere. Not 0.4 percent or 4 percent, but 0.04 percent! How can it be so ...