securityinvestment 썸네일형 리스트형 • A Journey Through Time: The Geology of Our Planet A Journey Through Time: Exploring the Geology of Our Planet Our planet has been around for billions of years and has gone through many changes due to its geological - the science of physical features of the Earth - history. As geologists, we can explore how the Earth formed and changed over time, and how these changes have affected us today. The Earth's geological history is marked by changes in.. 더보기 이전 1 다음