본문내용Are you smoker? Nowadays, there are many smokers in the world, and smokers are increasing about 2persents per year. Although many people quit smoking in developed countries, many people become new smokers in developing countries. Many people always abhor smokers, and it is an international tendency. However, if we think likely that, we are wrong. All of us undoubtedly know several bad effects of smoking because many scientists and doctors research its effect, and announce them. Maybe smoking is like to kind of drug, it affects our body to need them. Cigarette is composed with nicotine, tar, rutin, resin, organic acid, etc. Nicotine and tar cause much bad effect specially.
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