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प्रश्न
______ present in air protects life on the earth from the harmful effects of ultraviolet rays from the sun.
पर्याय
Oxygen
Nitrogen
Ozone
Hydrogen
MCQ
रिकाम्या जागा भरा
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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