Currently, there is a widespread concern about the previously neglected connection between growing human population and decreasing wild species. As the two graphs obviously portrayed, American population in 1980 was 250 times than that in 1800, a trend accompanied by the extinction of nearly 70 kinds of wildlife in the past 300 years. A clear correlation is suggested that mankind has exerted a tremendously negative influence on natural species.

There are many factors responsible for the aforementioned tendency. First and foremost, to satisfy the space demand for the booming population, the only available solution for Americans is to take occupation of forests and grassland. that used to be habitat of wild animals and plants. Furthermore, the process of industrialization and urbanization has generated severe pollution that essentially destroys environment and ecosystem.

In my point of view, the dearth of wildlife today forecasts an unpromising future for humans tomorrow. In order to eliminate species extinction, relevant laws and regulations must  be established and enforced to maintain a large portion of unspoiled areas. Effective measures should also be applied to ensure that the impact of pollution be removed.

近来人们开始普遍关注以前被忽略的人口增长和自然物种减少之间的关系。正如两幅图表显示，1980年的美国人口是1900年的250倍，同时在过去的300年间大约有70种野生生物在美国灭绝。这清楚地表明人类给自然物种带来了巨大的负面影响。

以上趋势是由诸多原因造成的。首先，为了满足迅速增长的人口对于空间的需求，对于美国人来说最有效的解决办法就是占据森林、草原等其他动植物的天堂。此外，工业化和城市化的进程造成了严重的污染，在根本上摧毁了环境和生态系统。 我认为，今天野生生物生命权的被剥夺预示着将来人类并不明朗的前景。为了减少物种灭绝，应该制定相关的法律法规、强制保护更多的地区保持其原始状态。应该采取有效的措施来减少污染的影响。

词汇及词组：

exert an influence: 对„„造成影响 

booming: adj. 急速发展的

take occupation of: 占据，占有 

generate: v. 产生，发生 

ecosystem: n. 生态系统 

dearth: n. 缺乏

unpromising: adj. 没有前途的，没有希望的 

eliminate: v. 排除，消除

unspoiled: adj. 未损坏的，为开发的

句型：

A clear correlation is suggested that…

There are many factors responsible for the aforementioned tendency. First and foremost …