Greenhouse Gases: Why Is CO2 More Concerning?

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Scientists are increasingly focused on carbon dioxide as a greenhouse gas due to its higher annual emissions from biological sources, such as animal respiration, and the combustion of fossil fuels. The significant volume of carbon dioxide produced annually surpasses that of methane. Additionally, while methane is a potent greenhouse gas, its presence in the atmosphere is shorter-lived compared to carbon dioxide, which persists longer and contributes more significantly to long-term climate change. The ability to convert methane into carbon dioxide through combustion further emphasizes the concern over carbon dioxide levels.
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why are scientists now more concerned about carbon dioxide as a greenhouse gas rather than methane for example?
many thanks,
 
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Because more carbon dioxide is generated from biological sources (animal respiration) and the combustion of fossil fuels on an annual basis than methane is. At least with mineral methane (natural gas), you can burn it to make more carbon dioxide.
 

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