what is a volcano? explain.
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A volcano is an opening in the earth's crust through which lava, volcanic ash, and gases escape. ... Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth's crust. As the magma rises, pressure decreases, allowing the gases to form bubbles.
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A volcano is an opening in the earth's crust through which lava, volcanic ash, and gases escape. ... Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth's crust.
An example of a volcano is Mount St. Helens in Washington state in the U.S. An example of a volcano is the eruption of Krakatau in 1883 and the eruption of Mount Tambora in 1815, the two largest explosive and destructive volcanoes since the 1800s.
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