Final answer:
Sand dunes form from deposited sand due to wind action and offer various protective and ecological benefits.
Explanation:
Formation of Sand Dunes:
Sand dunes form when wind deposits sand, creating hills of sand due to saltation and gravity. These dunes migrate over time in the direction of prevailing winds.
Benefits of Sand Dunes:
Sand dunes provide benefits such as:
- Protection against wind erosion
- Creation of diverse habitats for beach plants
- Formation of natural barriers against storm surges
Learn more about Sand Dune Formation and Benefits here:
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