Some mountains are volcanoes, and some volcanoes are mountains, but not all mountains are volcanoes, and not all volcanoes are mountains. For a mountain to be a volcano and a volcano to be a mountain, it must be formed from magma and volcanic materials from below the Earth's surface.
<span>They are called seismic gaps. Seismic gaps are a segment of an active fault, they are responsible for production of earthquakes.</span>
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Because I took this class last year
But I’m also guessing
Answer:
the Andes is the primary mountain range in South America
