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why do volcanoes produce lava
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why do volcanoes happen
why do volcanoes erupt and how
why do volcanoes occur
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why are volcanoes formed
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why do volcanoes produce lava, how do volcanoes get their lava, what makes the lava of a volcano, why do volcanoes happen, why do volcanoes erupt and how, why do volcanoes occur, why do volcanoes form, why do we have volcanoes, why does lava exist, why are volcanoes formed, what creates lava flows, what creates a volcano
