Final answer:
Composite volcanoes, or stratovolcanoes, are formed by alternating layers of lava and ash, leading to steep-sided cones.
Explanation:
Composite volcanoes, also known as stratovolcanoes, are formed by alternating layers of lava and ash, resulting in steep-sided cones. These volcanoes exhibit a symmetrical cone shape with a distinct crater and are typically found in subduction zones. Examples include Mount Rainier in Washington and Mount Fuji in Japan.
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