What happens when volcanoes release greenhouse gases into the atmosphere?

When volcanoes erupt, they emit a mixture of gases and particles into the air. Some of them, such as ash and sulphur dioxide, have a cooling effect, because they (or the substances they cause) reflect sunlight away from the earth. Others, such as CO2, cause warming by adding to the the greenhouse effect.

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multiplying and dividing the two decimals and the eqations by the same number of the overalls