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A peninsula is a landform surrounded by water on three sides, while a bay is a body of water partially enclosed by land. Peninsulas jut out into bodies of water, while bays are indentations in the shoreline where the land curves inward.
In geography, a concave refers to a landform or geological feature that curves inward like a bowl or a crescent, often found in valleys, depressions, or certain parts of coastlines. Concaves can be shaped by various erosional processes, such as water flow, glacial activity, or wind erosion. They are important in shaping the overall topography and landscape of a region.
The type of dead-end is called a "cul-de-sac" (French for bottom of the sack). The term is also used for closed anatomical passages found in humans and other organisms.
A V-shaped valley is typically formed by the erosion of water flowing down a valley, causing the sides to slope inward at a V angle. A U-shaped valley, on the other hand, is formed by glacier movement, which carves out a wider, U-shaped valley as it moves downhill, resulting in a broader and more rounded topography.
The Piedmont region is characterized by hilly terrain and rocky soil, located between the Appalachian Mountains and the Coastal Plain. The Coastal Plain, on the other hand, is a relatively flat region that extends from the Atlantic Ocean inward. The Piedmont tends to have more diverse flora and fauna due to its varied topography, while the Coastal Plain is known for its fertile farmland and coastal ecosystems.