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If solid crust had not formed what would be the effect on permanent hydrosphere development?

Answer and explanation

Correct answer: The base for permanent accumulation of rainwater would remain weak

The hydrosphere means the water present on Earth in oceans, rivers, lakes, groundwater, ice and other forms. For water to collect and remain for a long time, Earth needs a sufficiently cool and stable solid surface. A solid crust provides a basin-like foundation on which condensed water can gather instead of remaining only as moving vapour or being affected by a continually molten surface.

If no solid crust had formed, the long-term accumulation of rainwater would have had a weak or unstable foundation. The other choices do not follow: crust formation does not directly make oxygen rise immediately, and it would not cause the ozone layer to form first. Therefore, the best answer is option D, because permanent hydrosphere development depends on a stable solid surface.

Related tags

CrustHydrosphereWater StorageEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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