No Smoking
As we all know, smoking is harmful to our health. Unluckily, most of us know little about it, especially smoke pollution.
Smoking produces some poisonous gas, such as carbon monoxide. It pollutes the environment badly. Sometimes the abandon cigarette leads to fire and even burns a forest. It also damages our lives and property.
Besides, smoking can cause many diseases. For example, the smoke injures the lung badly as a result of lung cancer. The smoke, of course, harms not only the smokers themselves, but also the non-smokers around them.
In China, we cut off so many trees for making cigarette cases, but we seldom reuse the thousands disused cases. What a waste!
For our better future, please advise the smokers to give up smoking and give back the beauty to the nature.