Explain Landscape Changes Over Time Practice Test

At Lava Creek, a thick ash layer sits above a buried soil layer with tree root fossils, and above the ash is a new lava rock layer. The soil and roots are in the lowest layer. What do the rocks and fossils show about how this area changed?

At Sunset Basin, the lowest layer is limestone with coral fossils, the middle layer is sandstone with beach shell pieces, and the top layer is soil-like rock with rabbit bones. The bottom layer is oldest. Explain what happened to this landscape over time using the evidence.