GRE写作Issue模拟题5:The Result of Natural Processes

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 didn't 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, it's 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 doesn’t 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 can’t 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 human’s 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 it’s 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.