
Special Effect that affect us and the environment
Let us see some negative effects of volcanoes:
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Eruptions occurring close to human settlements may spill and destroy lives and property. People often have to be evacuated.
Example: Chaparrastique volcano in El Salvador started erupting on 29 Dec, 2013. Anyone living within 2 miles of the volcano is evacuated.
Source: BBC News:www.bbc.co.uk/news/world-latin-america-25545555
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Ash discharged very high into the stratosphere can have negative consequences on the ozone layer. Read more about that here.
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Landscapes and natural sceneries can be destroyed.
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Ash and mud can mix with rain and melting snow, forming lahars. Lahars are mudflows flowing at very fast pace.
Some positive effects of volcanoes include:
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Different types of erupting volcanoes provide extraordinary scenery, so beautiful and natural that they attract tourists to the area, bringing in some economic value.
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Places close to volcanic activities tend to have higher potential forgeothermal energy, which can be an advantage to the towns and cities.
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Some ash and lava breakdown become soils that are rich in nutrients, and become good areas for crop planting activities.