Geology is a multidisciplinary scientific study of the Earth's origin, structure, composition, and history. It includes the processes that have given rise to its present state and how they are interconnected. Geologists play a leading role in discovering, utilizing, and managing natural resources, evaluating how natural processes impact life on Earth and how humans interact with Earth. Geology is the study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them. An essential part of geology is studying how Earth's materials, structures, processes, and organisms have changed. Geologists work to understand the history of our planet. The better we can understand Earth's history, the better we can foresee how past events and processes might influence the future. Geology is a highly satisfying, rewarding career. Geologists are in demand and commonly earn two to three times the national average per capita income. Sample career opportunities- Environmental Industry assess the impact of construction or protect water resources. Government assess and monitor geologic hazards or study planetary geology. Petroleum and Mining find and produce natural resources.