高中精华双语文章:动物正灭绝于人类之手!.doc
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1、高中精华双语文章:动物正灭绝于人类之手!任何一种生物过于特殊化以致于不能随着环境的变化而改变自己的特性的动物,或者是任何一种必须与一种能更好地适应环境而又更加强大的动物相竞争的动物,它们的命运都将是灭绝,这是个很自然的演化过程。然而,人类迅猛发展的科学技术却以惊人的速度杀死某些物种或改变动物的生存环境。动物正灭绝于人类之手!Humans are Killing Animals !来源:学+科+网动物正灭绝于人类之手!An animal species becomes extinct when it fails to produce enough young is each generation
2、 to keep pace with the death-rate. We can tell from fossil evidence in rocks that many living species have become extinct over the millions of years since life began. It is a natural process and extinction is the fate of many animal that has specialized too far to change when its environment changes
3、, or has to compete with a better-adapted and more powerful animal. Because of remarkable technical developments during the past few centuries, man has destroyed or nearly destroyed some species by killing them at such a rate that they couldnt produce enough offspring, or by completely changing thei
4、r natural environment at surprising speed. 不论何种动物,只要每一代不能繁殖出足够的后代,不能与这种动物的死亡数字相平衡,那么这种动物就会逐渐灭绝。我们从岩石中的化石遗留下的证据中可以辨别出来,自从地球上有生命时开始,在若干个百万年中,有很多动植物的物种已经逐渐地灭绝了。任何一种生物过于特殊化以致于不能随着环境的变化而改变自己的特性的动物,或者是任何一种必须与一种能更好地适应环境而又更加强大的动物相竞争的动物,它们的命运都将是灭绝,这是个很自然的演化过程。由于最近几百年来各项科学技术的迅猛发展,以惊人的速度大量杀死了某些种动物,或以惊人的速度彻底改变了
5、这些动物的生存的自然环境,致使这些动物不能生育繁衍出足够的后代,人类已经消灭了或已经接近于消灭了某些种动物。A number of examples can be given of the way in which natural environments are being rapidly changed - Amazonia, for instance. There is every likelihood that many species of animals will be made extinct because of these and similar clearances of
6、natural vegetation. Large numbers of animals have been hunted and killed for food. The North American buffalo is a case of the near-extinction of a species through hunting. Often the numbers are so great the hunters may not realize the danger. But even when the danger is widely publicized, the finan
7、cial rewards for the hunters may be so great that they choose to ignore the threat to the species. Attitudes like this have led to hunters killing animals for furs, for ivory or merely for ornaments. A slight variation on this is when tourists hunt animals for trophies. Magnificent creatures such as
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