It has layers because sediments continue to build up with the lighter stuff on the surface which pushes previous sediments down into layers.
Answer:
Both Greece and Rome are Mediterranean countries, similar enough latitudinally for both to grow wine and olives. However, their terrains were quite different. The ancient Greek city-states were separated from each other by hilly countryside and all were near the water.
Answer:
D. The six essential elements of geography are used more commonly.
Explanation: