IELTSData Reading Passage 109 – Carbon’s New Math
IELTSData Reading Passage 109 Carbon’s New Math Carbon’s New Math To deal with global warming, the first step is to do the number. {A} Here’s how it works. Before the industrial revolution, the Earth’s atmosphere contained about 280 parts per million of carbon dioxide. That was a good amount of “good” defined as “what we […]
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