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What is the primary reason that deep ocean saltwater does not directly participate in the hydrological cycle?

Answer and explanation

Correct answer: Sunlight does not reach there and temperature is extremely low

Answer: A is the best choice. The hydrological cycle exchanges water mainly through evaporation at the surface, condensation in the atmosphere, precipitation, runoff, and infiltration. Deep ocean water is far below the sun-warmed surface, so it receives little direct solar energy and is generally cold. It therefore does not evaporate directly as readily as surface water; ocean circulation may later bring some water upward. B is wrong because water density is not zero; deep water is actually relatively dense. C is not the primary explanation, and the statement overemphasizes atmospheric pressure rather than the lack of surface heating. D is wrong because deep seawater still contains dissolved oxygen, although its amount can vary. Memory cue: evaporation is a surface-energy process, not a deep-water process.

Related tags

Deep-OceanEvaporationHydrological-CycleHydrological CycleThe Living WorldBiologyClass 11 Mcq

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