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प्रश्न
______ present in air protects life on the earth from the harmful effects of ultraviolet rays from the sun.
विकल्प
Oxygen
Nitrogen
Ozone
Hydrogen
MCQ
रिक्त स्थान भरें
उत्तर
Ozone present in the air protects life on the earth from the harmful effects of ultraviolet rays from the sun.
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