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composed of sand, coastal erosion creates little problem for the beach because it uses this sand to Chapter 9 Beach Erosion and Loss 3 sustain the environment. After all, sand is the lifeblood of beaches. However, migrating upward and landward through space and time does create a huge problem for buildings and roads built too close to the shoreline. And therein lies the rub â protecting the land with a seawall will lead to beach loss.
That made him smile. Dad said, 'There are several agents of erosion that occur. Water can be one of the most effective and efficient modes of erosion. Waves, for instance, can cause changes in landforms by weathering the surrounding rocks and forming a beach by eroding the debris and depositing it on the shore. As the waves slowly wear down the rocks, the bits of rock turn into sand, which is a size of a rock piece.