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世界

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地球
地球

世界,通常指人类所生活居住的地球。地球表面可以用一张世界地图来描述。

对于全球来说:20世纪的世界发生了一系列重大事件:

使用Plate Carrée投影法组合卫星照片形成的地球表面地形图
使用Plate Carrée投影法组合卫星照片形成的地球表面地形图

此外,全球人口数量爆炸性的增长:从1820年的10亿,到1930年20亿,1960年到达30亿,1974年40亿,1988年50亿,在2000年到达60亿。

21世纪,科学技术仍然呈现出指数性的增长趋势,这既给人类带来了希望(例如医学的进步),同时也带来了恐惧。(例如战争中越来越多致命武器的出现)

目录

[编辑] 地理

七大洲位置示意图
七大位置示意图

全世界分为七大,四大

[编辑] 国际性的问题

[编辑] 国际争端

全球有超过250,000公里的陆地边界线将全世界3分为325个区域,陆地国家有192个独立国家和72个主权特属地区、区域, 和其它各种实体; 由于族群文化种族宗教, 以及语言划分的国家具有不同的政治实体,还有历史、自然地形、政治命令, 或者占领, 造成了有时任意和强加的界限; 海上国家要求限制并且到目前为止建立了130个沿海边界和联合开发区域以调拨海洋资源并提供海上的国家安全; 边界、边境/资源, 以及领土争端由于不同程度的处理,或者休眠,或者造成猛烈的军事冲突; most disputes over the alignment of political boundaries are confined to short segments and are today less common and less hostile than borderland, resource, and territorial disputes; undemarcated, indefinite, porous, and unmanaged boundaries, however, encourage illegal cross-border activities, uncontrolled migration, and confrontation; territorial disputes may evolve from historical and/or cultural claims, or they may be brought on by resource competition; 种族冲突仍然是世界范围内领土和边界纷争的重要原因。海上和河流上的岛屿是领土和边界纷争的主要焦点。其他冲突愿意包括对水源,矿产资源(特别是石油),渔业和可耕地的争夺。nonetheless, most nations cooperate to clarify their international boundaries and to resolve territorial and resource disputes peacefully; regional discord directly affects the sustenance and welfare of local populations, often leaving the world community to cope with resultant refugees, hunger, disease, impoverishment, deforestation, and desertification

[编辑] 难民

联合国难民事务高级专员估计在2003年12月全球大约有970万难民以及多于2500万的国内被迫流亡者。

[编辑] 违禁药物

可卡因:

全世界,古柯的种植估计在173,450公顷,几乎全部在南美洲并且70%在哥伦比亚;潜在的可卡因生产在2003年期间估计在728吨(或835公吨出口质量的可卡因);古柯铲除计划一直在玻利维亚哥伦比亚秘鲁进行;2003年缴获了376吨出口质量的可卡因,还有26吨被破坏(抛弃或毁坏);出口质量的可卡因的消耗量估计是800吨。

鸦片制剂:

鸦片罂粟的种植在2003年估计有137,944公顷,大部分在西南亚东南亚以及44%在阿富汗,潜在生产了等值于429吨纯净海洛因的3,775吨鸦片;阿富汗缅甸哥伦比亚墨西哥巴基斯坦泰国越南承担了鸦片铲除计划。


[编辑] 参見


[编辑] 外部連結

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