1. How are layers of rocks evidence that the Earth has changed over time? (2 Points) A. Each layer of rock tells us what type of rock was on the surface at that time. B. The oldest layers are near the bottom. C. The K-Pg boundary indicates a major event 65 million years ago. D. These formations have always been here, since the Earth formed with little change. E. The different formations show the type of erosion that happened in that area.