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What are the most common types of sand dunes?
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The most common types of sand dunes are linear, parabolic, and dome-shaped. Linear dunes form when winds blow across a flat surface, such as a beach or desert. Parabolic dunes form when wind blows in a circular pattern over an area with minimal vegetation. Dome-shaped dunes form when wind blows over hills and ridges, creating a mound-like shape.