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global winds and differences in temperature and salinity.
ocean currents are caused by difference in temperatures and salinity lol :) :P hehe
C- DIFFERENCES IN WATER DENSITY
Ocean currents are caused by various factors. They are made from earthquakes, winds, tides and differences in density. The currents of the ocean have an effect on the weather.
water density
deep ocean currents form by the differences in the density of ocean water
It is called an ocean current
deep ocean currents form by the differences in the density of ocean water
Differences in temperature and in density of seawater drive deep ocean currents.
There are many different forces that create ocean currents. Among them are: the earth's rotation, salinity differences, wind, density differences, and buoyant forces. Temperature differences can create some of these differences, but we would have ocean currents even if the oceans were a uniform temperature.