The diagram reveals how greenhouse gases are able to catch the sun's energy. As can be seen, it can occur by passing some stages, which need many supporter substances.
Firstly, the sunlight comes first to the earth as heat, then some of it is released into space and the rest of it is trapped by greenhouse gases. As a result, the earth becomes warmer due to obtaining more heat energy. This phenomenon has gotten worse recently because the amount of carbon dioxide (CO2), which is the main substantial content to create greenhouse, is available abundantly. In fact, there are three kinds of human activities, which make carbon dioxide overflowing, such as burning fossil fuels which is done by many industries, transportation uses, like car and truck, producing some dangerous gases and cutting down the trees legally in the forest area in the big proportion, which actually have capability to absorb the carbon dioxide emission.