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정보 바로가기 : Thousands of satellites are due to burn up in the atmosphere every year d...
Thousands of satellites are due to burn up in the atmosphere every year d...[카테고리 설정이 아직되어 있지 않습니다.]
as CFCs that were widely used in fridges, spray cans and cleaning products. The 1987 Montreal protocol phased out CFCs and other ozone-depleting substances, and led to significant progress in...
