1.enumerate the trace caused by an earthquake describe the change it brought on the land surface
2.How Does a volcanic eruption oocur?
3.Enumerate the changes caused by a volcanic eruption.Describe the changes it brought on the land surface.
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Answer:
1?
2Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. Melting may happen where tectonic plates are pulling apart or where one plate is pushed down under another. Magma is lighter than rock so rises towards the Earth's surface
3Volcanic eruptions can profoundly change the landscape, initially through both destructive (flank failure and caldera formation) and constructive (lava flows, domes, and pyroclastic deposits) processes, which destroy vegetation and change the physical nature of the surface (e.g., porosity, permeability, and chemistry).
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