I remember that when I was child, I saw one public service announcement in the television that was performed by Yul Brynner, who was an actor of "The King and I". In an announcement, he said, "If I hadn't had smoking the cigarette, I would not have talked to you smoking was hazardous the health". An announcement was played after he had died in lung cancer, which was caused by smoking. This announcement gave me …showed first 75 words of 857 total…

…showed last 75 words of 857 total…with ozone, which is produced by a chemical reaction in the air between pollution and sunlight, and other chemical, such as nitrogen dioxide and so. It will produce much poisoned gas, which affects environment seriously. In fact, smoking not only kills the smoker, hazards innocent non-smokers, but also ruins the natural ecosystem and environment. Therefore, it is no doubt that smoking should be banned in public places in order to protect all people and environment.