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Carbon dioxide - Wikipedia
Trends in CO2 - NOAA Global Monitoring Laboratory
Carbon dioxide | Definition, Formula, Uses, & Facts | Britannica
二氧化碳(一种碳氧化合物)_百度百科
CO₂ emissions - Our World in Data
Climate Change: Atmospheric Carbon Dioxide
How Exactly Does Carbon Dioxide Cause Global Warming?
Carbon Dioxide - Climate Change: Vital Signs of the Planet
Overview of Greenhouse Gases | US EPA - U.S. Environmental …
Carbon Dioxide | CO2 | CID 280 - PubChem