Kuroshio
Peruvian
Labrador
None of these
Pacific Ocean
Arctic Ocean
Atlantic ocean
Indian Ocean
Currents
Density difference
Slope of the ocean floor
Waves
Atlantic Ocean
Mediterranean Sea
Gulf Stream
East Australian current
Equatorial current
Brazil current
North Sea
Caspian Sea
South China Sea
River Niger
River Nile
River Zambezi
River Congo
Lower to higher altitudes
The surface of the sea to greater depths
One coast to another
One sea or ocean to another
The prevailing Westerlies
The prevailing Trades
Difference in temperatures
Equatorial climate
Black Sea
Lake Victoria
Lake Superior
