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How can wind system affect rainfall?

Answer and explanation

Correct answer: By bringing moist air

Direct answer: Option C, by bringing moist air. Winds are moving air, and they can carry water vapour from oceans, seas, lakes or other moist regions. Step by step: a wind begins over or passes across a water source; it collects moisture; it moves toward land; when the moist air rises and cools, water vapour can condense into clouds; suitable conditions may then produce rainfall. Therefore wind direction and moisture strongly affect rainfall. Option C is correct. Option A is wrong because changing soil colour does not explain how wind supplies atmospheric moisture. Option B is wrong because a wind system does not cause rainfall by stopping a river. Option D is irrelevant because language has no physical role in rainfall formation. Note that moist wind alone does not guarantee rain; lifting and cooling are also commonly needed, but among the given choices bringing moist air is the best answer. Exam cue: moisture-bearing winds are associated with rainfall.

Related tags

Wind SystemMoist AirRainfall

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