"condition in which the earth's surface is worn away by the action of water and wind"@en-us . . "erosion"@en-us . . . . . "0"^^ . . "113692275"@en-us . . "110413485"@en-us . "14518924-n"^^ . . . "114518924"^^ . "0"^^ . . . . . . . . "erosion"^^ . . .