“每年10月,南极上空的臭氧量都急剧下降,臭氧空洞扩大到2.4亿平方千米,这样使紫外线辐射量增加了11%”。全球变暖,臭氧减少,普降酸雨,噪声污染和白色污染等环境问题突出。随着生产力水平的提高,环境问题的产生以人为因素为主。在一些厂矿附近,人们滥用化学药品,乱倒垃圾造成严 “Each year in October, the amount of ozone over Antarctica has dropped dramatically, and the ozone hole has expanded to 240 million square kilometers, which has increased the amount of ultraviolet radiation by 11%.” Global warming, ozone reduction, general acid rain, noise pollution and white pollution are prominent environmental issues. With the improvement of productivity, environmental problems are mainly caused by human factors. In some factories and mines, people are abusing chemicals and throwing garbage around