A) The rate of decrease of temperature with increasing depth goes on decreasing from equator towards poles.
B) The change in sea temperature below 2000 m is negligible.
C) The diurnal and annual range of temperature cease below the depths of 5 fathom and 100 fathoms respectively.
D) The annual range of temperature is the same for open oceans and closed seas.
Correct Answer: D
Solution :The annual range of temperature is higher for enclosed seas than open oceans. This is because of the fact that enclosed seas are surrounded by land masses which are heated and cooled more quickly than water bodies.
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