INTRODUCTION
Human population in the past 48 years has more than doubled its seize, from 2.5 billion in 1950 to 5.9 billion in 1998 . A few month ago the Secrtary of the United Nation declared a baby as the No. 6 billion citezen of the earth. As you may have noticed, human population has reached a size that threatened our environment and the sustainability of the earth. Is the earth bounded to face this number of human? In fact, in the human history, human population increased stably over centruies until the …showed first 85 words of 1502 total…
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…showed last 85 words of 1502 total…water resources have heavily polluted already.
CONCLUSION
After decades of exponentially growth of population, now it is the time for us to sit down and think again that is our environment¡¦s carrying capacity enough to sustain this many of us. Environmental issues countributed by growth of population are just a corner of the iceberg. We must take action to make plans in order to confornt the situation, if we want the earth to support our descentants as well as it supported us.
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**Bibliography**
BIBILOGRAPH
