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The formation of river deltas is a geographical process that illustrates the dynamic interaction between land and water. When a river reaches a body of water, such as an oc or s, it sl down, depos the mate it has car from upstr. Gradually, t sediments accum to crea deltas, which are fertile landforms that extend into the water. Deltas not only support diverse ecosystems but also provide rich agricultural land.
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参考答案：ean ea ows iting rials ried eam he ulate te