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What is the most expert level conclusion about sequence of lithosphere and hydrosphere?

Answer and explanation

Correct answer: Solid cool surface was a prerequisite for permanent water accumulation

The correct answer is option A. The early Earth was extremely hot, and its surface was initially largely molten. As the planet lost heat, a solid lithosphere or crust developed. Continued cooling then allowed atmospheric water vapour to condense into liquid water. Basins and depressions on the solid surface provided places where that water could collect and remain, allowing a stable hydrosphere to develop. Thus a cool, solid surface was an important prerequisite for permanent accumulation of liquid water. Option B reverses the causal relationship: the hydrosphere did not form the core. Option C gives the wrong sequence because stable oceans require a sufficiently stable surface. Option D is incomplete and incorrect because the lithosphere formed through cooling and solidification of rocky material, not only from vapour.

Related tags

LithosphereHydrospherePlanetary CoolingEarth EvolutionEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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