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Ninety-nine percent of the gas molecules emitted during a volcanic eruption are water vapor (H2O), carbon dioxide (CO2), and sulfur dioxide (SO2). The remaining one percent is comprised of small amounts of hydrogen sulfide, carbon monoxide, hydrogen chloride, hydrogen fluoride, and other minor gas species.
Human activities emit 60 or more times the amount of carbon dioxide released by volcanoes each year. Large, violent eruptions may match the rate of human emissions for the few hours that they last, but they are too rare and fleeting to rival humanity’s annual emissions. In fact, several individual U.S. states emit more carbon dioxide in a year than all the volcanoes on the planet combined do.
@Anna : Where are you quoting your info from ? Recently received info pointing in the opposite direction, unfortunitly I can't find it & where the info was taken from was presented. Was should be wasn't & my e-mail might have been politically pointed.
@Derf If you open, read, or mouse-over those links, they are both dot_gov links. The first usgs_dot_gov, the second climate_dot_gov. So, your take on the information is really your opinion of information coming from federal agencies. I don't undo contradictions in today's world.
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Going green ?
@Anna- thanks for that... one reason that I love MFO is because I'm always learning something.
Was should be wasn't & my e-mail might have been politically pointed.
https://www.scientificamerican.com/article/earthtalks-volcanoes-or-humans/