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प्रश्न
How is ultraviolet radiation useful to human being?
अति संक्षिप्त उत्तर
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उत्तर
Ultraviolet radiation absorbed by the skin stimulates the production of vitamin D, which helps build strong bones and teeth.
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पाठ 5: Electromagnetic Waves and Spectrum - EXERCISE [पृष्ठ ११४]
