This flow chart shows the information about how the solar energy can be used. To begin with, we can see that the sun would heat up the land and some of the heat energy would radiate into space. According to the graph, part of the heat would be trapped by greenhouse gases or reflected off atmosphere from the sun directly. Last but not the least, there may be problems that extra carbon dioxide from burning fossil fuels from trucks, cars or factories. In conclusion, we should protect trees to absorb carbon dioxide.