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.
Among other things, ocean currents are responsible for the warmer temperatures in Western Europe, they enable the Antarctic to support vast amounts of plant and animal life and their disruption likely caused a mass extinction of 95 percent of all marine life 250 million years ago [source: NOAA: Ocean].