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How does the water cycle drive biogeochemical cycles in nature?

Answer and explanation

Correct answer: It acts as a solvent and medium for dissolving and transporting nutrients

Direct answer: B. Water is an excellent solvent and a moving medium. Rain dissolves substances from the atmosphere and rocks; runoff carries dissolved ions and particles into streams, lakes, soils, and oceans; infiltration moves them through soil; and organisms take up dissolved nutrients. Water therefore helps circulate elements such as carbon, nitrogen, phosphorus, sulfur, and minerals between air, soil, water, rocks, and living organisms. A is wrong because water does not destroy gases as a general rule. C is wrong because ordinary water-cycle flow does not melt rocks; weathering and erosion may alter them without melting. D is wrong because water availability can support biological activity and does not generally stop nitrogen fixation. Some nutrients also move through the atmosphere or food webs, so water is not the only pathway, but it is a major solvent and transport medium. Memory cue: water dissolves, carries, and redistributes.

Related tags

Biogeochemical-CyclesWater-As-SolventNutrient-TransportHydrological CycleThe Living WorldBiologyClass 11 Mcq

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