It has been.....
https://pubs.er.usgs.gov/
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you’ve posted here twice to date. Wrong on both occasions. But I do hope you’ll stick around. You might learn something.
Volcanoes emit around 0.3 billion tonnes of CO2 per year. This is about 1% of human CO2 emissions which is around 29 billion tonnes per year.: https://www.skepticalscience.com/vol...termediate.htm
More about this later. I’ll post it when the page flips.