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An explanation of the causes of coastal erosion and the development of coastal erosion landforms. The rate of coastal erosion varies due to factors such as the make-up of the cliffs and the strength of the waves. Coastal erosion leads to the formation of cliffs, headlands, caves, arches, stacks and stumps. Erosion is a problem where homes are close to the cliff edge, for example at Haisborough in Norfolk. Sea defences can be used to protect these areas.