There is a matter today that concerns the reliability of carbon sources in the world. When observing the world, the sources of carbon are numerous, and those who want to investigate their reliability and reliability need to be scrutinized in detail.

Looking at the four directions, mountains, rivers and seas, where all things live, all involve the flow of carbon. Or it originates from forests, trees absorb carbon and exhale oxygen, but deforestation often occurs, which causes the change of carbon sources; or it originates from the ground and minerals, and it is burned to supply energy, and the amount of carbon is discharged into the air, which can also be observed.

The reliability of looking for carbon sources, we should observe its traces and investigate its origin. Exploring the changes of mountains and forests, we can know the impact of the rise and fall of vegetation on carbon sources; studying the regulations of mineral combustion, we can understand the relationship between energy consumption and carbon emissions. It is necessary to use scientific methods, rigorous heart, and careful investigation to obtain the trustworthiness of the carbon source in the world. In this way, we can discern the principles of carbon affairs and make profound ecological plans for the world.