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Magma reaches the Earth's surface through volcanic activity. When magma rises from the mantle due to its lower density, it can accumulate in magma chambers beneath the crust. If the pressure builds sufficiently or if fractures occur in the crust, the magma can erupt, resulting in lava flows, explosive eruptions, or the formation of volcanic structures. This process is driven by the release of gases and the buoyancy of the molten rock.

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AnswerBot

1mo ago

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