Biological diversity has never been so threatened as it is today as a result of the process of human civilization. The various forms of pressure created by human activity have destroyed natural balance, led to the deterioration of natural habitats, genetic erosion and the rarity, even disappearance, of a number of plant and animal species.
As the pace of civilization accelerates, more people, taking more space, needing to use more natural resources, engaging in ever-growing consumption, impose severe deterioration on the habitat of animals. An increasing number of people come to realize that the disappearance of animals will result in serious threat to the equilibrium of ecosystem. Simply put, the extinction of hawks, a rat-eating bird seen in many regions, will result in the rapid propagation of rats. And rats, further, will destroy the prairies and threaten the other animals like gazelles, zebras and others, who live on grass and green lands. The coexistence of animals and human beings creates perfect harmony and brings about the vividness to our planet.
It is hard to imagine what our world would be like without animals. Sociologists also point out that the disappearance of animals can cause social and economic problems. Animal trade, as a supporting sector to the world economy, was very active before. However, the situation is beyond control since animal trade is very profitable and alluring. Many species cannot escape the adversity of being killed.
Certainly, our diet cannot be without meat. There are living stocks, which can provide us with sufficient and nutritious produce. Therefore, we need not to resort to wild animals, especially the endangered ones. To protect animals is to protect our living environment. Every individual should join efforts to keep the diversity of animals.
2017年高考英语书面表达热点话题30 申请信
2017年高考英语书面表达热点话题11 争做好学生好公民
2017年高考英语书面表达热点话题9 吃补品
2017高考英语押题:05 非谓语动词(学生版)
2017年高考英语书面表达热点话题7 书面通知
2017届高考英语考前冲刺:强化动词
2017年高考英语书面表达热点话题10 喝纯净水
2017高考英语押题:书面表达 俗语写作
2017届高考英语考前冲刺:强化形容词及副词
2017高考英语押题:书面表达 面对失败的态度
2017年高考英语书面表达热点话题24 与同学相处
2017年高考英语书面表达热点话题26 骑自行车
高考英语阅读理解专练:故事类(广东卷)
2017届高考英语考前冲刺:强化定语从句和名词性从句
2017届高考英语考前冲刺:强化语法填空复习
2017年高考英语书面表达热点话题13 义工旅行
2017年高考英语书面表达热点话题21 注意细节
2017高考英语押题:书面表达 留言条
2017年高考英语书面表达热点话题5 邀请信
2017届高考英语考前冲刺:情态动词
2017年高考英语书面表达热点话题27 对待失败的态度
2017年高考英语书面表达热点话题3 回复E-mail
2017年高考英语书面表达热点话题1 知心话
2017年高考英语书面表达热点话题18 保护地球
2017届高考英语考前冲刺:强化完形填空解题策略
2017届高考英语考前冲刺:强化情态动词和虚拟语气
2017年高考英语书面表达热点话题22 平板电脑
2017年高考英语书面表达热点话题32 食品安全
2017届高考英语考前冲刺:强化非谓语动词
2017年高考英语书面表达热点话题12 回信
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