In the revised, fifth edition of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-5), hoarding disorder becomes a separate diagnosis, characterized by a persistent difficulty discarding or parting with possessions, regardless of their actual value..
Surface ocean currents are driven mainly by winds and are affected by seasons.Deep ocean currents are driven mainly by density and temperature gradients. However the most important and fundamental causes for the formation of the ocean currents are solar heating,winds and gravity. Source(s): Arasan Â· 9 years ago.
I. Introduction. A. The major currents in the oceans are driven by the tides, the wind, which generates the major surface currents, and differences in the density of seawater, which generate the major deep water currents. B. First we'll look at the surface currents and then the deep water currents. Tides are discussed in another unit. II.