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Theconceptof sea-floorspreadingprocess involvessplittingoftectonicplates . Tectonic plates areslabsof Earth'slithospherein largesizes. Thesea floorspreading alsoinvolvestheformationof underwatermountains.Sea-floor SpreadingThis process is ageological process.Tectonic platesbreaksor getseperated.Lessdensermaterialrisesaboveresultingin formation ofseafloor mountain.Thecrustof the floorcracksformingmountainsand thenewfloor of the ocean iscreated.Such newsea flooris calledmid ocean ridge.Therefore thechainof underwatermountainsalong whichsea-floorspreading occurs is aMid ocean ridge.Learn more aboutmid ocean ridgehere:brainly.com/question/25157235...