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Q: The warm and cold ocean currents are caused by–
  • A. Prevailing winds
  • B. Earth’s rotation
  • C. Variations in density of sea water
  • D. All of these
Correct Answer: Option D - Ocean currents are continuous movements of water in the ocean that follow set paths, kind of currents in the ocean these are the result of : Earth's rotation Air Pressure Prevailing winds Evaporation & Precipitation Diurnal range Ocean Barriers etc.
D. Ocean currents are continuous movements of water in the ocean that follow set paths, kind of currents in the ocean these are the result of : Earth's rotation Air Pressure Prevailing winds Evaporation & Precipitation Diurnal range Ocean Barriers etc.

Explanations:

Ocean currents are continuous movements of water in the ocean that follow set paths, kind of currents in the ocean these are the result of : Earth's rotation Air Pressure Prevailing winds Evaporation & Precipitation Diurnal range Ocean Barriers etc.