Coastal plains and Interior plains is in elevation. Coastal plains have low elevation and low relief. Interior plains have varied elevation and low relief. Coastal plains also lie along the shore while Interior plains are surrounded by other hopefully this helps
Coastal plains and interior plains are both large, flat land areas, but coastal plains are found near oceans and formed by ocean sediment, while interior plains are located further inland and shaped by ancient rivers and glacial deposits. Both plains may have wetlands, but coastal plains tend to have more dynamic water systems influenced by tides. Overall, their differences highlight the impact of geographical location on the environment and ecosystems.
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