The movements of tectonic plates drive geologic activity on Earth, serving as the primary mechanism behind the formation of surface structures. Due to the ongoing motion of these plates, adjustments within the Earth's crust take place, resulting in a build-up of pressure (both vertical and lateral), and forcing magma toward the Earth’s surface, which leads to the alteration of the landscape. Some changes occur over millions of years, while others happen rapidly, ultimately resulting in new geological features such as hills, mountains, valleys, volcanoes, and rifts.
Chemical weathering, I believe.
Response:
Point A is positioned at an elevation of 7000 feet. The symbol representing point B indicates a picnic area, with point B's elevation noted as 6800 feet.