Most people think that volcanic eruptions would heat the Earth up dramatically but that isn't true. When a volcano erupts it throws out large amounts of sulphur dioxide (SO2), water vapour, dust, and ash into the air. Large amounts of gases and ash can change climates in certain regions for years by increasing planetary reflectivity causing atmospheric cooling. Tiny particles called aerosols are produced by volcanoes. Because they reflect sunlight back into space they have a cooling effect on the world. So there are still somethings that happen on earth that actually cool the earth instead of heating it. The greenhouse gas, carbon dioxide is also produced however the CO2 put into the air by volcanic eruptions is insignificant when compared to emissions created by humans.Site used:(http://www.climatechangechallenge.org/Resource%20Centre/Climate-Change/3-what_causes_climate_change.htm#1.)
