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What are some of the most common types of sand dunes?
assistant
Some of the most common types of sand dunes include linear, parabolic, barchan, and transverse. Linear dunes form parallel ridges or lines that extend in a straight line for long distances. Parabolic dunes have curved crests that resemble a parabola. Barchan dunes have crescent-shaped crests with one end higher than the other. Transverse dunes are formed when wind blows across an existing dune face, creating a series of ripples perpendicular to the prevailing wind direction.