Process:  -Magma rises from deep in the earth -The magma goes into volcanos -The volcanos pressure the magma upwards -The pressure causes the magma to push through the surface of the volcano -The lava cools -The lava forms new rock -New magma is pressured to the surface of the volcano -The volcano bursts through the rock the formed after the last eruption.
 Question: What is the effect of more magma will be pushed upwards on more/greater eruptions.?
against