Topic 17: The correlation between population growth and extinct species

　　From the curve chart given above, we can observe that the number of population and extinct species in U.S. experienced some changes during the past several hundreds of years. From 1800 to 2000, the number of population increased rapidly from 0 to 250 million. From 1600 to 1800, the number of extinct species rose gradually from 10 to 30. However, it increased sharply from 30 in 1800 to 70 in 1900.

　　The curve graph informs us of the phenomenon that there exists close correlation in the growth between extinct species and population. Many reasons can account for this phenomenon, and the followings might be the most critical ones: firstly, the growing extinction of species could be attributed to the absence of people’s consciousness of wild animal’s protection. Moreover, to rake in excessive profit margins from animal-products transaction, quite a few businessmen tend to overlook the existence rights of wild animals and poach them savagely. Last but not least, relevant laws and regulations might not have been strictly enforced to impose a heavy penalty on those who poach and kill animals, which also reinforces this trend.

　　something must be done to change the current situation. For one thing, the public should enhance their consciousness of animals’ protection. Moreover, a large-scale education campaign should be launched to popularize the idea that wild animals are also members of our nature and ecosystem. Only in this way can we balance the relationships between human being and other species. (244 words)

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