- UID
- 92891
- 帖子
- 5
- 积分
- 5
- 学分
- 35 个
- 金币
- 0 个
- 在线时间
- 0 小时
|
Population Growth
It is well known that there has been addresstic increase in a world population,but it is probably less well known that the extinction rate of wild life species is experiencing apparell trend,
Take the United States for instance,in 1990 US population reached an unpleasnt level of 214million which is approximately 240 times of that of 1800.On the other hand wild life species are disappearing from the country and on an alarming rate.By1900 about 17 wild life species will never be seen in the US.We are fully justified in the clearing htat the exclosive population growth has had an adverse effect on survival of wild life species and will be a constant treat to the wild life resource if no immediate action can be taken.
Nothing has every equal the magnetude and speed with which the human species is outling the phycal and chemical world.It has been demorishing the environment we are living in. |
|