求英语小作文题材

我这有 一篇不知道行不行啊！
人和环境(Man and His environment)
Throughout history man has changed his physicai environment in order to improve his way of life.With the tools of technology he has altered many physical feathures of the earth.He has transtormed woodlands and prairies into farms and made lakes and reservoirs 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