What is a gyre?

A) A deep ocean density current

B) a westerly moving current system within an ocean basin

C) an upwelling along a coastline

D) a circular moving current system within an ocean basin

Answer: the answer is d

Explanation: A gyre in oceanography is any large system of rotating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis Effect; planetary vorticity along with horizontal and vertical friction, which determine the circulation patterns from the wind cur