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 beings 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 governments 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.
