Answers

2016-03-18T09:39:50+08:00
Volcanic ash associated with huge volcanic eruptions that may cause the decrease in the earth's average temperature for a few years. volcanic ash greatly affect the global temperature, when a volcano eject much ash or sulfur dioxide, as the wind circulate it carry the volcanic materials, the volcanic materials avoid the sunlight  to reach the earth surface and thus it decrease the global temperature.
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