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Each molecule of carbon dioxide has one carbon atom and two oxygen atoms, so its chemical formula is  CO<sub>2</sub>.
 
Each molecule of carbon dioxide has one carbon atom and two oxygen atoms, so its chemical formula is  CO<sub>2</sub>.
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CO2 is one of the so-called "greenhouse" gases.  Heat-trapping by CO2 has been observed on Earth and Venus.  The extent of its role in the current increase in average global temperatures is a topic of active political discussion.
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CO2 is one of the so-called "greenhouse" gases.  Heat-trapping by CO2 has been observed on Earth and Venus.  The extent of its role in the current increase in average global temperatures is a topic of active political, though not scientific, debate.
    
[[Category: Chemistry]]
 
[[Category: Chemistry]]
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