Volcanic eruptions are driven by the

Position 1: Scientists monitor these pressure changes using seismometers and ground-deformation sensors to provide early warnings of impending activity.

Position 2: This expansion increases internal pressure until the overlying rock can no longer contain it.

Position 3: Volcanic eruptions are driven by the accumulation of magmatic pressure beneath the Earth's crust.

Position 4: The resulting eruption releases vast quantities of ash, lava, and pyroclastic material into the surrounding environment.

Position 5: As molten rock rises from the mantle, dissolved gases such as carbon dioxide and sulfur dioxide expand rapidly within it.