als and over time the minerals from the
             irrigated water supply collect in the topsoil. After many years of constantly farming a
             particular region, the soil begins to become less and less fertile. This process, known as
             salinization, has affected many of the farms around the world. Once this process is
             complete, the soil becomes totally useless for any kind of farming. Over long periods of
             time, salinization, combined with the erosion of the topsoil due to wind and rain, starts to
             cause the world's farmlands to expo
             ...