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The “thermohaline” circulation of the ocean refers to the flow of ocean water caused by changes in density.

The branch of science that deals with the physical and biological properties and phenomena of the sea.

A body of water or air moving in a definite direction, especially through a surrounding body of water or air in which there is less movement.

The concentration of dissolved salts in water etc., usually expressed in parts per thousand by weight.

The weather conditions prevailing in an area in general or over a long period.

The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

The degree of compactness of a substance.

The distance from the top or surface to the bottom of something.

A very large expanse of sea, in particular each of the main areas into which the sea is divided geographically.

The second-largest ocean in the world, separating North America and South America on the west from Europe and Africa on the east.