Multiple choice

Thermocline is

  1. about 500 m thick with temperature ranging between 20o and 25oC

  2. boundary region from where there is a rapid decrease of temperature of the oceans

  3. very cold and extends up to the deep ocean floor

  4. due to the unequal distribution of land and water in the northern and southern hemispheres

  5. the term used to define the total content of dissolved salt in sea water
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B Correct answer
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