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I~IONInseawatertherearevariousedirnentswhichcanaffectmarineenvi~t.Forexample,P8rticularlyinestuaryarea,theto~hyofchannelandseabedisccingcontinuouslybecauseofthedespitionofagreatquantityofmudsandsandsbroughtbyilifluentriver.In~talareasandharassthere-s...