Gen Science GS Ozone Parat Prithvi Ki Satah Se ________ Kilometer Ki Unchai Par Hai .

ओजोन परत पृथ्वी की सतह से ________ किलोमीटर की ऊंचाई पर है। - The ozone layer is at height of ________ kilometers from the surface of the Earth. - Ozone Parat Prithvi Ki Satah Se ________ Kilometer Ki Unchai Par Hai .  Gen Science GS in hindi,    question answers in hindi pdf   questions in hindi, Know About Gen Science GS online test Gen Science GS notes in hindi quiz book