Geoscience processes have indeed changed Earth's surface over time. When interpreting the cross-sections of Penn Dixie Park and Thacher Park, there are specific pieces of evidence that support this statement.
1. **Fossil Evidence:** In the cross-section of Penn Dixie Park, you can observe fossil evidence such as marine shells, trilobites, or other ancient organisms embedded in the rock layers. These fossils provide evidence of past life forms that inhabited the area, indicating changes in the environment and the evolution of life on Earth. The presence of fossils in the rock layers suggests that geoscience processes like sedimentation, burial, and lithification have occurred over time, altering the Earth's surface.
2. **Folded Rock Layers:** In the cross-section of Thacher Park, you might notice folded rock layers that indicate tectonic activity and deformation. These folded layers show how the Earth's crust has undergone immense pressure and movement, leading to the bending and folding of rock strata. This deformation is a clear indicator of geoscience processes like mountain-building events or plate tectonics that have shaped and modified the Earth's surface over millions of years.
By analyzing the fossil evidence and folded rock layers present in the cross-sections of these parks, we can understand how geoscience processes have played a crucial role in altering the Earth's surface throughout its history.
