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Why is ozone considered most useful in the stratosphere rather than in the troposphere?

Answer and explanation

Correct answer: Because it absorbs harmful ultraviolet rays

Correct answer: A. The stratosphere contains the major concentration of atmospheric ozone, commonly called the ozone layer. Ozone absorbs much of the Sun’s biologically harmful ultraviolet radiation before that radiation reaches Earth’s surface. This protects living organisms from excessive UV exposure. The same gas has a different effect near the ground: tropospheric ozone is a pollutant that can irritate the respiratory system and damage plants. B is wrong because sea salt is produced mainly by evaporation and other marine processes, not by ozone. C is unrelated; ozone does not drive river flow. D is also unrelated because Earth’s internal heat comes from processes inside the planet, not from ozone. Thus A gives the protective reason, while the location explains why stratospheric ozone is beneficial.

Related tags

Ozone LayerStratosphereUltraviolet RadiationAtmosphereCovers GaapTheory Base Of AccountingAccountancyClass 11 Mcq

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