Why do volcanoes-erupt

There is a lot more to volcanic eruptions tha meets the eye – they are complex, diverse and caused by a multitude of events. Directly underneath the Earth’s crust there are layers of molten rock, which, because of the high temperatures at the core, are melted to form magma.Magma contains various gases – predominantly carbon dioxide, water vapour and sulphur dioxide. It is stored in magma chambers that are sealed beneath a lid of solid rock. Due to...

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