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The dynamic continuity of the global water cycle is possible due to which unique astronomical position of Earth?

Answer and explanation

Correct answer: Earth being in the Goldilocks zone, where water can exist in all three states

Answer: B. Earth receives an appropriate amount of solar energy because it lies at a suitable distance from the Sun, often described as the habitable or Goldilocks zone. Under Earth’s conditions, water can naturally occur as solid ice, liquid water, and water vapour. Solar heating drives evaporation, cooling allows condensation, and suitable cold conditions permit freezing; these phase changes keep the water cycle moving. The phrase “Goldilocks zone” is a useful broad description, not a claim that distance alone controls every detail of climate. A is wrong because being extremely far from the Sun would favour very cold conditions and limited liquid water. C is wrong because the atmosphere is essential for vapour transport and weather. D is wrong because zero rotation is not the reason water changes state. Memory cue: Earth is “just right” for all three water states.

Related tags

Goldilocks ZoneWater StatesWater CycleHydrological CycleThe Living WorldBiologyClass 11 Mcq

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