I believe the answer is "When ocean currents combine, they create an area of rotating currents called a(n) <u>gyre</u>."
<h2><u>EXPLANATION: </u></h2>
In oceanography, a gyre is any large system of circulating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis effect; planetary vorticity along with horizontal and vertical friction, determine the circulation patterns from the wind stress curl.
Answer: An exoskeleton is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton of, for example, a human. i think its B