I always thought there's way more human pollution than the amounts casued by a couple of volcano activity here and there? A quick search turns up multiple respo

I always thought there's way more human pollution than the amounts casued by a couple of volcano activity here and there? A quick search turns up multiple responses like this one: Scientists have calculated that volcanoes emit between about 130-230 million tonnes (145-255 million tons) of CO2 into the atmosphere every year (Gerlach, 1999, 1991). This estimate includes both subaerial and submarine volcanoes, about in equal amounts. Emissions of CO2 by human activities, including fossil fuel burning, cement production, and gas flaring, amount to about 27 billion tonnes per year (30 billion tons) [ ( Marland, et al., 2006) - The reference gives the amount of released carbon (C), rather than CO2, through 2003.]. Human activities release more than 130 times the amount of CO2 emitted by volcanoes--the equivalent of more than 8,000 additional volcanoes like Kilauea (Kilauea emits about 3.3 million tonnes/year)! (Gerlach et. al., 2002) Granted this is just about CO2, but I wouldn't be suprised if the same principle applies to other pollution.