Answer :
Answer:
As magma rises, pressure Decreases , causing dissolved gases to expand and form bubbles. The size of the bubbles increases, exerting a lot of force. The force of the expanding gases pushes the magma from the Magma chamber up through the Pipe . Molten rock and gas explode through the Vent , which is at or near the top of the volcano.
Explanation:
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Answer:
1. Decreases
2. magma chamber
3. pipe
4. vent
Explanation:
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