4. Whenever a volcano erupts, hot magma is forced out of the Earth's crust through the
b. graben
c. synclines
4. Which one of the following is not a plain?
a.
vent
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Answer:
Stratovolcanoes are built by many alternating eruptions of lava and ash . The magma below and inside the mountain exerts a lot of pressure on the crust and on the volcano itself. The magma pushes its way through small cracks in the crust and finally reaches the surface.
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Answer:
Garben.....................
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