Humans have been releasing more CO2 in to the atmosphere than all natural sources combined since about 1900. Our annual output is about is currently 6 billion tons/year and rising, which is about 40 times more than volcanoes.
From Wikipedia:
Volcanic activity releases about 130 to 230 teragrams (145 million to 255 million short tons) of carbon dioxide each year.
and:
Since ~1900, the flux of carbon entering the atmosphere from fossil fuel consumption has exceeded the net flux of carbon from all sources, indicated that the sum of all other impacts on the carbon cycle has been acting as a net sink, and serving to sequester some of the carbon being released from fossil fuel consumption.
2006-06-30 15:17:10
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answer #1
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answered by Engineer 6
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Volcanoes. An old National Geographic article, which was published a year after the famous Mt. St. Helens eruption, mentioned that the average volcanic eruption put into the atmosphere more dust, soot particles, radioactive particles and greenhouse gasses than everything we have done since rubbing sticks together.
The article showed photos of the area of the eruption. The first set of photos showed dead gray ashes everywhere, with dead burnt tree trunks sticking out, and little craters (which were actually ponds.) But it looked like the surface of the Moon.
The second photo was taken a year later and the change was amazing. It was the exact same spot-- you could tell because it had the exact same tree trunks and ponds. But now everything was green and growing. The heat had burned away dead leaves and undergrowth which had prevented sunlight reaching the forest floor. The heat had also caused long-buried seeds to germinate. And the ashes were apparently good fertilizer.
And the planet does this repeatedly (spouts volcanoes) and the biosphere survives. I agree that we should not mess up the world, but we should not think that we can destroy it, either. We are not that significant, and the planet is designed a lot better than we realize.
2006-06-30 15:30:00
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answer #2
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answered by cdf-rom 7
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I think the human race is the culprit. The volcanoes erupts once in a while. But we, the human beings are damaging the atmosphere continuously by creating CO2 in whatever way possible. Only if we make our minds to conserve the environment, then it will be a haven to live in.
2006-06-30 15:11:41
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answer #3
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answered by jewelcy j 2
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Well, from your question I can not tell. You ask to compare the CO2 production of Human race and one volcano! Well, an active one would produce sizable amounts (like the Santa Helena, about 20 years ago). But there are hundreds that are either inactive or produce small amounts!
2006-07-02 10:03:37
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answer #4
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answered by soubassakis 6
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Humans
2006-06-30 15:04:25
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answer #5
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answered by zeid b 1
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The human race, because a volcano's output gases are mostly CO and SO2.
That said, cows outproduce us for greenhouse gases (mostly methane, I admit) by a long shot. Human contributions to global warming have been greatly overstated. That's the price one pays for getting one's science from journalists.
2006-06-30 15:27:18
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answer #6
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answered by D'archangel 4
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hmmm we have the contestants...
Human!! Most drive gas guzzlers and dont give a _ _ _ _ about the envirment!
Volcanoes!! Sit there erupting every once and awhile realeasing co2.... not always.
Hmmm... the winner is...
Votes: Humans 99%
Volcanoes 1%
Humans win!!!!
2006-06-30 15:02:53
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answer #7
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answered by Anonymous
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I heard today a report that a volcano gives off more than 50,000 pounds of co2. that's more that most city's produce in a year.
2006-06-30 15:22:07
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answer #8
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answered by mikehendley55 2
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In a limited area, a volcano will outproduce us by a mile. But humans are a constant source. (and let's not forget all those critters). Overall we would win this dubious race.
2006-06-30 15:00:47
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answer #9
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answered by snoweagleltd 4
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Volcanoes contribute about 110 million tons of carbon dioxide per year while man's activities contribute about 10 billion tons per year.
2006-06-30 15:14:44
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answer #10
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answered by Epidavros 4
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