Book 6 Unit 4 Global Warming
still, many people find it difficult to stop smoking. one reason is that smoking usually becomes a habitual behaviour, and habits, whether good or bad are not easy to be given up. another reason is the effect of nicotine, the substance found in cigarettes works on people somewhat as drugs do.
measures have been taken to help people keep away from the harm of smoking. in many cities, smoking is forbidden in public places. the danger of smoking is warned of everywhere. and newspapers are asked not to publish advertisements for cigarettes. world “no tobacco day” is observed every year as the biggest campaign against smoking.