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when the magma presurre leads to the eruption lava is often produced,this when cooled indeed produrces more land although it does burn though and destroy alot in it's way .In fact most islands around constructive plate boundries are formed because of eruptions. the lasest example of this is a new island of the coast of Iceland.

volcanoes also help scientist to take readings and mesurements to see when it's gonna blow , how deep plate is, and things about the Earth beneath the crust.

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15y ago

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