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20 May 09
Sleep - Wikipedia, the free encyclopedia
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regular sleep is essential for survival.
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Drugs such as sleeping pills and alcoholic beverages can suppress certain stages of sleep, leading to sleep deprivation[citation needed].
23 Jan 09
科学家发现达尔文生命进化树理论不正确_科学探索_科技时代_新浪网
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越来越多的细菌、动、植物的基因测试显示，异种交配要比我们原来想像得多，这意味着基因并不是简单地遗传给生命树上的个别枝条，它们还在物种之间以不同的进化路径进行转换。其结果是一个杂乱无章且更为缠结的“生命网”。
12 Aug 08
Welcome to IEEE Xplore 2.0: Selected Topics in Signal Processing, IEEE Journal of
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Volume: 2 Issue: 3 Date: June 2008
09 Aug 08
Are Viruses Alive?: Scientific American
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in a gray area between living and nonliving
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scientists are beginning to appreciate viruses as fundamental players in the history of life.
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