เพราะว่า เป็นวิทยาศาสตร์ที่ศึกษาเกี

It is a scientific study on the matter, the various parts of the world, such as minerals, rocks, soil and water, including the changes in the world. That occur in nature. Since birth until the present.Physical, chemical and biological components that make up the history. Environment in the past and the present. Various internal and external factors influencing the surface. Evolution of life.Means of natural resources. The sustainable use as well.

Because it is a science that studies about the world. Any matter that is part of the world, such as minerals, rocks, water, and soil, as well as the process of change within the world that occurred in nature from birth the world till now. Physical, chemical, and biological components, knew the history and environment in the past until now. Study on various factors, both internal and external influencing surface condition changes. The evolution of living organisms. And how to remove natural resources sustainable utilization.

Because it is the scientific study of the world of matter, which is a component of the world such as mineral soil and water as well as the process of change in the world that have occurred in natural world from birth until now.The physical, chemical and biological components, to know the history, and the environment in the past to the present study, both within and outside factors that influence the evolution of organisms surface condition changesand how to bring natural resources for sustainable use.