Volcanoes are essentially vents on the earths surface. Volcanoes spit out molten rock
(lava) gases and debris from the earths interior. Magma and gases build up pressure over times gets the strong and results in a eruption. When a volcano erupts it sends lava, rocks, gases, and ash into the air. The mountains volcanoes we know are formed when debris from eruptions collect and harden.
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