Natural Equation

It is the 'Green Equation' which is the most relaxing in the world. You can recognize the importance of the natural environment by looking at travel photos and text, and express your conviction about your environment through travel photos. This is a collection of natural essays where you can honestly talk about the environment of the future society you are thinking of while looking at various natural and social environments. It is also a textbook where you can share your opinions and opinions on the natural environment.