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What is the most important function of the water cycle within the biosphere?

Answer and explanation

Correct answer: Cycling of nutrients and availability as a solvent

Correct answer: B. The water cycle continuously moves water among the atmosphere, land, oceans, soil and living organisms. Water is also an excellent solvent, so it dissolves and transports many mineral nutrients and provides the medium in which most cellular chemical reactions occur. Through rainfall, infiltration, runoff and groundwater movement, nutrients can be redistributed through ecosystems. A is wrong because the water cycle does not primarily increase temperature; evaporation can even cool surfaces. C is not its main biological function, and D is unrelated. Water is not merely something organisms drink: it is a reactant, transport medium and habitat component. Memory cue: water cycles, nutrients travel, life reactions occur.

Related tags

BiosphereWater-CycleNutrient-CyclingHydrological CycleThe Living WorldBiologyClass 11 Mcq

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