a famous environmental activist should be honored People activities have caused serious damage to the environment such as air pollution , water pollution , and global warming . There is a very famous environmental activists named Zhang yang in my country who is not content with passive empathy for environmental problems and inspired by proactive opportunities to bring about his vision of a better world. Therefore , we should build a statue to honor his great contribution to our planet . First of all , he always often impart us that one of the most serious effect of human activity on the environment is water pollution . In one of his lecture he told us that dumping the water from human activity into the river and stream is very popular in today's china . The waster will make the water downstream become undrinkable and unusable for agriculture. The main source of water pollution is factory waster ,oil , and gas runoff from the highway . He also investigate the pollution situation of many factories under the menace of their workers . Secondly , in addition to water pollution , he also concern with the problem of global warming . He found that average temperature of our country constantly rise due to the rise of the green house in the atmosphere . He often publicize in mass media that if people continue to rise the amount of green-house gas in the atmosphere , the temperature of the planet will continue to rise , melt the polar ice caps .Eventually major cities like Hong kong , Guang zhou will be totally destroyed . He often advise the government to control the burning of fossile fuel so that decrease the amount of the green-house gas . Finally , he claim that air pollution in our country impact our health most in many occasions . He always blame the modern transportation such as modern gas-powered automobile as well as the electrical generators that burn fossil fuel and pour chemical waster for polluting the air . Through his investigation , he found that air-borne pollution will falls back into the earth in the form of acid rain , destroying the plant life and human buildings . People seldom care about things that don't benefit them directly . Zhang famed for revealing that it is time to realize the hazard of the serious environment pollution and take action to provent further disaster . Our country need celebrity like him to help publicize the protection of our environment . Building a statue can not only honor him , it can also remind us to protect our planet .