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自我感觉是最好的一篇了,超时5 min
欢迎大家来打击我
121"At various times in the geological past, many species have become extinct as a result of natural, rather than human, processes. Thus, there is no justification for society to make extraordinary efforts, especially at a great cost in money and jobs, to save endangered species."
(Modified in WORD) (reject!!!!)
Many species have become extinct in the geological past since natural disasters when human beings did even not existed, but this issue can not be an excuse for people to evade the responsibility of saving endangered species at present. And, spending great cost in money and jobs to survive some particular animals and plants that are important to ecosystem is worth doing.
First I must concede that the disappearance of ancient species like Dinosaurs and Sword Teeth Tigers ( Xiphodon ) is not from human fault. Fierce change happened to the earth as catastrophes decided their inevitable fate and hence produced many other new lives including ancestors of human. However, at present age, things are different because human, that may be the cleverest species in the earth history, have modified the environment sharply by their industrialization and technological evolution that ever species could not do. Since the great influence especially pollution and excessive exploiting resources from nature set to the environment, the balance and peace of nature has been destroyed and therefore, more disasters appear and worse the living situations become lead to accelerating rate of loss of species. For instance, over disafforestation of bamboo plants lead to the situation of lack of food to the panda, thus the cherished animal is in danger of extinction. By realizing their own crimes to the nature, people have no other choices rather than take the liability to redeem their wrong doings.
Moreover, spending great cost in money and jobs to save crucial endangered species is in great value to human life since it is a beneficial work to protect the integrality of ecosystem. Let off the benefits that copious resources of foods, herbs or medicines and scientific objects are available due to diversity of species, lack of some kernels in the ecosystem would bring huge damages. If many important plants such as plants with green leaves died out in the world, no enough oxygen covered from carbon dioxide through photosynthesis would be a serious and direct result that threatens the lives of nearly all the species living on land. Even if oxygen could be supplied adequately, lack of foliage as the fundamental species in ecosystem would ruin the food chain.
However, to some less valued species, which is even baneful to human beings, no cost should be used to save them as just a waste of social possessions. Take the mouse for example, though some factors would cause the disappearance of this species in an assumption, since its unimportant position in ecosystem that can be replaced by many other ones and its harm to human, no action should be taken to save mouse and maybe people should strengthen the effect of the very factor to kill all the mice. Furthermore, some other pests can also get this kind of treatment by the same reason.
Factors in geological past ages could not be controlled by people, while present human should take the duty to protect the environment and redeem their fault in exploiting the earth. On the other hand, spending great money and jobs to save valuable endangered species and avoid wasting possessions to the rest ones would bring great benefits to human beings.
(531 words)
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