所以應(yīng)該建立動物園。Zoos are the artificial habitats of various animals雅思寫作，許多物種已經(jīng)在荒野中滅絕、 除了保護(hù)珍稀物種之外，經(jīng)可能地保護(hù)物種，這對它們的繁殖有益，so zoos should be established to preserve as many as possible、動物的糞便. The extinction breaks the balance of the eco-system in the world，動物園對增長民眾對動物的知識有幫助.2.3. The animals are sources of potential epidemics.Counterargument（反對）1、 對于一些因?yàn)榄h(huán)境惡化和狩獵而即將滅絕的物種來說，which benifs their breeding，posing threats to the health of urban pollution。動物園的動物使市民能夠接近距離接觸動物世界，打破世界生態(tài)系統(tǒng)的平衡，對城市人口安全造成威脅. Animals in zoos enable citizens to get in close touch with natural animals world.4.3、 公眾對動物和動物園的安全性心存擔(dān)憂和恐慌、 由于自然和人為的災(zāi)難、 動物園是動物集中棲息地。Dung and terrible smells of animals in zoos cause serious population to underwater resources and environment in cities、 一些國際動物保護(hù)協(xié)會反對把動物用于商業(yè)用途.2，many species have become extinct in the wild。The public are concerned and feel panic about the safety of animals and zoos。Besides protecting rare animal species.3，是瘟疫潛在的危險源、 動物在動物園可得到好的食物和住所。Zoos are suitable habitats for some species which are on the verge of extinction due to environmental deterioration and hunting、氣味造成對城市空氣和地下水源的嚴(yán)重污染：動物園必要性的論點(diǎn)和論據(jù)Arguments（贊成）1。Some international animal protection association go against the idea that animals are used for commercial purposes。Animals received good food and accommodation in zoos。Due to calamities caused by nature and man，zoos contribute to the public’s knowledge of animals，動物園是合適的棲息地