歌颂母爱的诗歌2016四级作文范文天天练：人口爆炸

大学英语四六级考试

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备考辅导

2016

四级作文范文天天练：人口爆炸

9. The World Population Explosion

The human

race has experienced a consistent increase in

population since the beginning of its history.

Famine and disease have done little to offset(

抵

消

)this steady increase. Too many people are added

annually to the population of the world. So both

the causes of population increase and the results

of having more people are worth careful study.

Culture evolution is the major factor responsible

for population increase. Early in human

development, people invented tools to hunt animals.

Later they built shelters to protect themselves.

Step by step, they made life easier. As a result,

fewer died from natural forces, such as harsh

climate and disease.

In the past, when

population grew, there was unexplored territory to

inhabit. But now, almost all the habitable land has

been explored.

The world's population may reach

8.7 billion in 2033. It is clear that world