At various times in the geological past, many species indeed have become extinct as a result of natural processes, such natural disasters as hurricanes, earthquakes, and so on. But it is the case with the long gone past, when people actually didnt have the ability to exert and significant influence on nature. Recent centuries have witnessed the prosperity brought about by the ever speeding development of Industry and Technology, but at the same time have caused far much more damages to nature, environment that we rely on to survive. According to statistics, in geologic age, the speed that species extinct is quite slow, one species of Aves disappears per three hundred years, one species of beasts extinct every eight thousand years. But since 1600, the ever recorded number of the extinct animals have raised to 720, not including those died out without noticing. The speed has been accelerated enormously, who is there to be blamed? The overall condition of nature will never change abruptly, unless due to human process, its human, since obtained the power to shape the world, has taken over the throne and driven most of species out of their realm. Moreover, to save the species is to save ourselves. Long gone are the days when people thought they can gain ceaselessly without paying back. Now scientists have confirmed the fact that the biodiversity is critical to the stability of biosphere. Many of the environment problems today such as global warming, El Nino and La Nina phenomena, are one of the aftermath that we human have induced, by endlessly robbing Nature of what we need. And the extinction of one kind of species doesnt not only affect the circumstances that it lived, but also has global effects in a genetic level. When one species died out, its gene appeared accordingly. The recently thriving technique of gene modification, which aims at improving human gene, will lose one of its precious materials. What if the extinct ones happened to carry the ones that would prevent human forever from genetic diseases? Far from talking about the biological disaster which will threat human survival, just think, if we were able to live alone in this world, how sad when we wake up to see nothing but our peers? Admittedly, we cant make extraordinary efforts to preserve endangered species regardless of the expense in effort, time and financial well being. After all, the very survival of human as a species overweighs other affairs of all kinds. What we do now must be beneficial to humans overall survival, and to protect endangered species also confines to this underlying principles. We save the animals within our ability, just for self-interests that to guarantee their existence is rewarding while to accelerate their extinction amounts to placing ourselves in jeopardy. In sum, in recent centuries its human rather than natural processes that precipitated the extinction of various specious. Thus is our responsibility to preserve the endangered ones, not only because of culpability but most importantly, we do this to protect ourselves. Thus there is indeed no justification for us to protect them irrespective of the expenses, we should keep a balance between our development and the preservation affairs. Everything we do should obey the rules that benefits the ultimate survival of human beings.
在地质历史的不同时期，许多物种确实已经灭绝，因为自然过程，如飓风，地震等自然灾害。但它的情况与长期过去，当人们实际上没有能力发挥和重大影响的性质。最近几个世纪见证了工业和技术的飞速发展带来的繁荣，但同时也给我们赖以生存的自然环境造成了严重的破坏。据统计，在地质时代，物种灭绝速度相当缓慢，一种鸟类消失，每三百年，有一种动物灭绝每八千年。但自从1600以来，灭绝的动物的数量已经上升到了720，不包括那些没有注意到的死亡。的速度大大加快，谁会被指责？整体自然条件不会变化突然，除非由于人的过程，它的人，因为获得塑造世界的力量，已经在宝座和驱动大多数物种的境界。此外，为了挽救这个物种，是为了拯救我们自己。当人们认为他们可以在没有回报的时候，他们会不断地得到回报的日子已经过去了。现在科学家已经证实，生物多样性对生物圈的稳定至关重要。许多环境问题，如全球变暖，厄尔尼诺尼诺和妮娜现象，是我们人类所导致的后果之一，是我们所需要的不断掠夺性质的东西。一种物种的灭绝不仅不影响它所生活的环境，而且在遗传水平上也有全球的影响。当一个物种灭绝时，它的基因出现了。近年来基因修饰技术的发展，其目的是提高人的基因，从而失去其宝贵的材料之一。如果那些已经灭绝的人发生了什么事来阻止人类遗传疾病的发生呢？远远地谈论生物灾难，这将威胁人类的生存，只是认为，如果我们能够独自生活在这个世界上，有多少悲伤时，我们醒来看到什么，但我们的同行？不可否认，无论在努力，时间和经济上的不好，我们不能做出非常的努力来保护濒危物种。毕竟，人类的生存作为一个物种，超过其他各类事务。我们现在所做的必须是有益于人类的整体生存，并保护濒危物种也限制了这一基本原则。我们拯救动物在我们的能力，只是为了自我利益，以保证他们的存在是有益的，同时加速他们的灭绝，使自己处于危险之中。总之，最近几个世纪是人类而不是自然过程，沉淀了各种似是而非的灭绝。因此，我们的责任是保护濒危动物，不仅因为罪过，但最重要的是，我们这么做是为了保护自己。因此，我们确实没有理由保护他们，不管费用，我们应该保持我们的发展和保护事务之间的平衡。我们所做的一切都应该遵守规则，这是人类最终生存的法则。