Man and His Environment
来源:发布时间:2008-12-14
Man and His EnvironmentThroughout history man has changed his physical environment in order to improve his way of life. With the tools of technology he has altered many physical features of the earth. He has transformed woodlands and prairies into farms and made lakes and reserviors out of rivers for irrigation purposes or hydroelectric power. Man has also modified the face of the earth by draining marshes and cutting through mountains to build roads and railways.
However, man's changes to the physical environment have not always had beneficial results. Today, pollution of the air and water is an increasing danger to the health of the planet. Each day thousands of tons of gases come out of the exhausts of motor vehicles. Smoke from factories pollutes the air of industrialized areas and the surrounding areas of the countryside. The pollution of water is equally harmful. The whole ecological balance of the sea is being changed and industrial wastes have already made many rivers lifeless.
Now environmental protection is more pressing than ever before. As we know, massive destruction of environment has brought about negative effects and even poses a great threat to man's existence. Indifference to these problems will mean committing suicide. Therefore, effective measures should be taken and laws passed to conserve environment. Otherwise,man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
【纠错】
更多留学相关内容
热2011年12月英语四级作文预测:给外国朋友
- 12-07·2011年12月英语四级冲刺备考:做练习记单词(5
- 12-07·2011年12月英语四级冲刺备考:做练习记单词(4
- 12-07·2011年12月英语四级冲刺备考:做练习记单词(3
- 12-07·2011年12月英语四级冲刺备考:做练习记单词(2
- 12-07·2011年12月英语四级冲刺备考:做练习记单词(1
- 12-07·吕梁市2012年职称英语考试网上报名入口
- 12-07·山西吕梁2012年职称英语考试报名时间12月5日至