Question

Due to how many reasons are volcanic eruptions caused?

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Answer 1

Answer:

Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.

Volcanoes erupt when molten rock called magma rises to the surface. the buoyancy of the magma, the pressure from the exsolved gases in the magma, and the injection of a new batch of magma into an already filled magma chamber. ... This lighter magma then rises toward the surface by virtue of its buoyancy.

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Answer 2

Explanation:

Some of the causes include :

- Due to earth's heat flow there is a movement generated in lithospheric plates which causes subduction and leads to volcanic eruption.

- Pressure generated from the gases from the magma.

- Movement of tectonic plates.