So, the common duty for us is to reduce the fuel burning and Carbon dioxide as much as possible. This is to extend the time for this world to be longer. The plastic bags we use have been produced from the plastic seed which it comes from the Petrochemical industry and uses the fossil fuels as the raw material. The plastic bag production is able to do in mass amount and low cost. The lifetime is short and people usually use it for only one time especially the small plastic bags. Some used plastic bags were thrown to be garbage. This kind of garbage is difficult to deal because it is light and thin. When it is attached with the other kinds of garbage, the decay will be more difficult as well.