What is the primary reason for the circulation of deep ocean currents?

The correct answer is temperature and salinity of the water .

Explanation:

The currents in upper 100 meters of Ocean are generated by the wind but the currents also flow below the 1000 meters in depth. These deep ocean currents are mostly driven by the differences in the density of the water which is caused by the temperature and salinity of the water. This process due to thermal (temperature) and haline (salinity) is known as thermohaline circulation.

Thus, the temperature and salinity of the water is the correct answer.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.