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It is natural process of animal species to become extinct (e.g. dinosaurs, dodos etc.). There is no reason why people should stop happening this.
To what extent do you agree or disagree?
Introduction
People have to admitthat natural selection is the rule of nature←表语部分的内容还是笼统的概念，换用“同位语从句”引出具体内容→ the nature's law that some species of animals die out because they are unable toadapt tothe environmental change. , so it is reasonable that some animals die out.However, this does notrepresentmeanthat peoplecannotshould notstop the extinction of animals. As a matter of fact, there are some reasons for people tostop it词汇升级→ intervene.
展开全文Body
Admittedly, in many cases, natural selection is a rule whichweeven themightyhumansneed to obeybecause it benefits to the environment←多余信息.For example,the food chain position ofalocalbirdismay no longer exist because itsincapabilityof replaced by a foreign specie which is more adaptable to localsurviving the changedenvironment,then the original one willbeextinct.←简化内容和逻辑。However, itdoesn'tdoes notmean thatpeople should not stop happening thishumans' interventionis not needed.In fact, the extinction of some animalsareisdue to human activities, such asloggingthat destroys the habitats of somewildlifeandconversionof thewildernessinto farmlands,instead of naturalthe nature'sselection ofcertain species and elimination of others.← 换一个方式说natural selection咯。【可惜反驳部分的内容和题目给定的内容冲突了。】
In fact,althoughthe extinction of some animals is part of the development of nature, it needs to be stopped byexternal forcesin order to prevent theadverseimpact, which may be too heavy on humans. For example, the lack of a bird species in a local ecosystem may lead to the overpopulation of a species of insect, and the insect may spreadsowidely and denselythatfarmlands are destroyed.
As a matter of fact, it is only when some animals are available thatthe balance and diversity ofthe environment canbe kept keep balance. In some areas,whichtheenvironment is poor and food chain is simple,多余的信息the extinction of oneakind of animal whose lackmayrepresent a linkcause the degradation of the localecosystems which will have a huge impact on environmenthas to reproduce so that thewellbeingof the local ecosystems can be maintained.For example,one kind of mouse' extinction in the north of China leadtothe proliferation of pests that leads tothe damage of environment.an animal whose activities are underground may be favorable to thefertilityof soil, and the disappearance of this animal speciesrendersthe soilinfertile.
【接下来的部分的内容和题目给定的内容冲突了。】

Meanwhile, the extinction of certain animals because of human should be rescued. It is no denying that many buildings and plants take up animals habitats, so they loose their shelters from the storm. If mounting animals extinct due to human activities, people should definitely save those animals as well as themselves.
Another reason is a rather general one. Humans should not let the nature take its own course, because if the naturewerekept in its natural state, many disasterswouldbe highly likely to happen. 注意此处故意用了虚拟语气。In fact, humans have historically intervened and successfully prevented many disasters. Thisprinciplealso applies to animal extinction as part of the natural process, which cannot be left alone.
Conclusion
In conclusion,althoughpeople should notstopinterfere withthe natural process of animal extinction,due tobecause the nature develops by naturalits own law ofselection.However, itiswould be ←注意此处故意用了虚拟语气。unfavorabledisadvantageousforthetwoaforementionedreasonsmentioned above.