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What is the main work of the ozone layer?

Answer and explanation

Correct answer: Absorbing harmful ultraviolet radiation from the Sun

The direct answer is A: absorbing harmful ultraviolet radiation from the Sun. The ozone-rich region in the stratosphere absorbs much of the ultraviolet radiation that could harm living organisms. In particular, it absorbs nearly all UV-C and a substantial part of UV-B. This protection helps reduce damage to human skin and eyes and also protects plants, animals, and microorganisms. Option B is wrong because most atmospheric oxygen is produced through photosynthesis by plants, algae, and some microorganisms, not by the ozone layer. Option C is wrong because temperature is influenced by many factors and direct temperature control is not the ozone layer’s main function. Option D is wrong because water vapour comes mainly from evaporation and other parts of the water cycle. Do not confuse the ozone layer with the broader greenhouse effect. Memory cue: ozone shields Earth from harmful UV rays.

Related tags

Ozone LayerUltraviolet RadiationStratosphereEnvironmental ProtectionGreen SkillsEmployability SkillsArtificial IntelligenceClass 12 Mcq

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