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Why are seas and oceans major sources of moisture in the atmosphere?

Answer and explanation

Correct answer: Because much evaporation occurs from them

Direct answer: A, because much evaporation occurs from them. Seas and oceans cover extensive areas and contain enormous quantities of liquid water. Solar heating, together with wind and other conditions, causes water molecules at their surfaces to enter the atmosphere as water vapour. This vapour supplies a major share of atmospheric moisture and later participates in cloud formation and precipitation. B is wrong because seas and oceans are not major moisture sources because they form mountains. C is wrong because they do not simply stop winds; wind may actually help move vapour away from the surface. D is wrong because soil formation is not the main reason for atmospheric moisture from oceans. The key connection is large water surface plus evaporation. Memory cue: oceans are the atmosphere’s largest broad water surfaces, so think “ocean → evaporation → moisture.” This does not mean every place receives equal moisture; winds, distance, temperature and atmospheric circulation affect where moisture travels and falls.

Related tags

GeographyOceanEvaporationAtmospheric MoistureWater CycleHumidityAnd CondensationHumidity Evaporation And CondensationWater In The Atmosphere

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