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The capacity of the atmosphere to hold the maximum amount of water vapour primarily depends on what?

Answer and explanation

Correct answer: Air temperature

Correct answer: B. At a given pressure, warmer air can have a greater saturation water-vapour content than colder air. “Maximum amount” refers to saturation capacity: when air reaches this limit, additional cooling or moisture input can lead to condensation. This does not mean that warm air always contains more water vapour; actual humidity also depends on how much moisture is available. A is not the primary school-level control of saturation capacity. C does not directly determine the amount of vapour air can hold. D protects against ultraviolet radiation but does not set atmospheric moisture capacity. The relationship is best understood through saturation vapour pressure, which increases strongly with temperature. Memory cue: warm air has a higher moisture ceiling; cooling lowers the ceiling and encourages condensation.

Related tags

TemperatureHumidityWater VapourHydrological CycleThe Living WorldBiologyClass 11 Mcq

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