detail.chiebukuro.yahoo.co.jp yahoo!JAPAN知恵袋2019/9/30 現在の大気中のco2二酸化炭素濃度は0.04%ですがこれを何%に下げれば温暖化を阻止出来ますか? Working together by happy family || Traditional life || Nepali Village - YouTube Working together by happy family || Traditional life || Nepali Village -…