THE MOTION OF THE OCEAN
'(<a href="http://www.j-archive.com/media/2011-10-06_DJ_30.wmv">Sarah of the Clue Crew shows a map on the monitor.</a>)  Warm water currents cool & sink in the North Atlantic, then are carried into the Indian & Pacific oceans along the system known as the global this 2-word term, like something you might find on an assembly line'
a conveyor belt