Superposition is the geologic principle which explains why the bottom stratum in a section of rock is the oldest. The word literally means placing one thing on top of another where the lower strata are the older.
Yes it was formed by a glaciers.
- The first three Chinese dynasties, the Xia, Shang and Zhou, are often referred as the '3 holy dynasties'.
- Qin Shi Huang, ruler of the Qin Dynasty became the first emperor of a unified China.
-The first dynasty established in China was the Xia Dynasty. Most of what is known about this early dynasty comes from legends.
Not completely sure cuz I don’t know what the required reading is, but the US is probably the most dependent on imported oil
