Which composition of water moves to begin a deep water current

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Cold and High salinity

Explanation: -

When the temperature of the water increases, the solubility of substances like salt in water increases. Thus warmer water has more dissolved salt and thus are consequently more dense.

A heavier water then sinks, setting up something called a convection current.

Again more the temperature more the volume of the water and consequently density is less. So cold water is more dense and sinks below.

Combining them Cold and High salinity composition of water sinks down forming a deep water current.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.