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2015-02-09T17:06:38+08:00

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Good effect of volcano :
∞ Produced very reach soils for farming years.
∞ People became more creative.

Bad effect of volcano:
∞ Influenced the society.
∞ Decrease in earth surface temperature.
∞ Spreading the aerosol from the plume around the globe.
∞ Measurable cooling of earth's surface for a period two years.

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