本帖最后由 m7catsue 于 2011-9-16 00:18 编辑
67 Some people believe that society should try to saveevery plant and animal species, despite the expense to humans in effort, time,and financial well-being. Others believe that society need not make extraordinaryefforts, especially at a great cost in money and jobs, to save endangeredspecies.
Should we spend resources savingendangered species? I believe no one would oppose this suggestion. But to what extentshould we try to save endangered species at the price of people’s time, jobsand financial well-being? From my perspective, society should make efforts tomaintain biodiversity and save species whose existence is under the threat ofhuman activities according to the current financial and technologicalcapacities.
Saving endangered species is a desirablegoal to make efforts, not only for the biodiversity and stability of theecosystem, but also for the survival of ourselves. Given what we know, a morediversified ecosystem which is an indispensable condition for humans to survive,is more stable and more sustainable. If we leave the present frail ecosystem inwhich species are dying off alone without any effective measures to intervene,then we are committing murders of both animals and ourselves. We are standingon the top of the food chain, and our dominance on earth depends on aconsiderable number of other species which become our food directly or ultimately.If one species becomes extinct, the whole food chain will be weakened. And theextinction of a certain species may cut off the food chain of another at ahigher position, which may become a concatenate reaction eventually threateningour own survival. Though maybe not arresting, this reaction is operative aslong as a certain species somewhere in the world is dying off. Thereforeeffective measures must be taken to protect endangered species, for bothbiodiversity and our own survival.
While we are trying to save lives ofendangered species, the society’s financial and technological capacities also needto be taken into consideration. Though it is a noble goal to save lives and maintainthe biodiversity of the earth, we have to set limitations on our possibleactions. Due to the finite financial and technological capacities it is neitherpossible nor provident to try to save all endangered species around the worldespecially those which are to be eliminated by the process of natural selection.The only sensible solution in my opinion is to first save those relativelyimportant species directly in the food chain at which we are on the top. Our ultimateobjective of saving endangered species is to maintain the biodiversity of the ecosystemin which we live, thus protecting ourselves. We should try to save those endangeredspecies and at the same time also try to maintain the current level of financialwell-being, because only in this way can we rally support from the public to carry out the policy. Although it is hard tobalance, this is the ideal condition we are supposed to attain.
To sum up, maintaining biodiversity ofthe ecosystem is a desirable goal, but limited by finance and technology we maynot be able to save all species in danger. We must strike a balance of currentbenefits, specifically the present financial well-being of citizens, and theinterests for humanity in the long run, stabilizing the ecosystem andprotecting ourselves.
看了大家写的几篇,我觉得我这个思路好狭窄啊。。 |