The ups and downs of population growth As is seen from the two graphs, it is clear that with the rapid growth of U.S. population from 1800 to 1900, the number of its wildlife species no longer soared during the same period. We can easily draw a conclusion that the sharp decline of wildlife species resulted from the population growth. As human population increases, the species of wildlife decline, and some are even on the brink of extinction. We may cite a variety of reasons for this situation. But the most contributing one is human being?s weak sense of wildlife protection which leads to the decrease of wildlife as a result of cases of illegal hunting and killing of wildlife for profits. Besides, the destruction of ecological environment also plays a pushing role. Less and less forest and pasture coverage with more and more pollution and soil erosion due to population problem make it even more difficult for the wildlife to survive. Hence, unfortunately but naturally a soaring number of human population comes in tandem with a descending variety of wildlife. Ecological environment construction and protection is a pressing and long-term task. To tackle the problem calls for, above all, the government?s efforts to control population growth, to decrease pollution and to enhance the laws to forbid wildlife hunting.
Moreover, common citizens should take practical actions to protect wild animals as well as our living environment.
UpS和起伏的人口增长为是从这两个图表中看到，很明显，随着美国人口的快速增长，从1800年至1900年，数量的野生物种不再猛增在同一时期。我们可以很容易地得出一个结论，野生动物物种的急剧下降导致的人口增长。随着人类人口的增加，野生动物的数量也在减少，有的甚至濒临灭绝的边缘。我们可以举出各种理由来表示这种情况。但最重要的就是人类?导致野生动物保护野生动物的减少由于非法猎杀野生动物案件的利润意识薄弱。此外，生态环境的破坏也起到了推动作用。越来越多的污染和土壤侵蚀导致的森林和草场覆盖率越来越少，这使得野生动物的生存更加困难。因此，不幸的是，自然人数不断上升的人口数量与下降的野生动物数量的串联。生态环境建设与保护是一项紧迫而长期的任务。要解决这个问题，首先，政府?要控制人口增长，减少污染，制定法律禁止猎杀野生动植物。此外，普通市民应采取切实措施，保护野生动物和我们的生活环境。