Nowadays we feel that the temperature of the earth is increasing. We need air conditioner to cool our rooms, we need big hat to cover our heads when we take a walk in the afternoon. We are now in a condition to face global warming. It is the increase in the average temperature of the earth. We can not blame the nature because of we, the human, being are considered one of the main causes of global warming in our daily activities. Transportation are causes the increasing of the emission of certain green house, forest are opened to be plantation or business area such as factories or hotels.
