A coastal plain is a low-lying area of land adjacent to an ocean or sea, characterized by flat terrain and a gradual slope toward the water. Coastal plains are typically formed by the accumulation of sediment deposited by rivers and oceanic processes, such as the action of waves and tides. Key features of coastal plains include: 1. **Geological Formation**: They often comprise sediments like sand, silt, and clay, which can come from river runoff, ocean currents, and erosion.
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