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地球上的水资源和水危机--《世界知识》

[日期:2009-02-26] 来源:网络  作者:不详 [字体: ]

地球上的水、森林、煤、石油等资源还够我们人类享用多少年?许多人类学家和科学工作者都试图准确地回答这个问题,以告诫现在活着的人多为后代的生存想想。令人忧虑的是,不管他们的估计是乐观,还是悲观,他们几乎一致否认地球资源是取之不竭,用之不尽,加之人类自己对生存环境的巨大破坏,他们感受到了从未有的人类生存的危机。我们愿以人类与自然这个专题的讨论引起对这场危机的更多的重视和认识。

  可以说地球上除了空气,没有哪一种物质比水对人类更重要了。水也是人类社会各种经济活动的基本要素一人们对水有很多赞誉,生命的源泉农业的命脉工业的血液等等.随着人类文明的发展,它还更多地被用来美化环境.可以说,水是世界上用途最为广泛的资源之一至于谈

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