考研滿(mǎn)分作文 | 社會(huì)熱點(diǎn)類(lèi)：人口

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     In the 20th century, the world population has increased dramatically, doubling in ever-shortening cycles. According to the statistics of the United Nations Population Fund, at the beginning of the 19th century, the world population stood at 1 billion, and by 1987 it reached 5 billion. And by the end of the 21st century, it will double to 10 billion.
     Population explosion has become a serious problem. Above all, population growth has put enormous pressure on world food supplies, making it difficult, if not impossible, to avoid hunger on a massive scale. Furthermore, the growing population poses a threat to our environment. Finally, overpopulation affects our quality of life.
     To sum up, unchecked population growth is the most serious problem humanity faces today. It is ultimately up to us, and in the best interests of other life that we do our utmost to solve this problem.