A common rock type found within oceanic crust is called basalt rocks. It is dark just like an igneous rock and it is basically a type of lava from a volcano.
The answer is B. folding, uplift, and erosion. certain mountains are created from the folding of the upper layers of earth's crust. valleys on the other hand are made from the erosion of land or soil. tectonic uplift of the earths crust is also responsible for creating mountains.
Answer: D. Mesopotamia
Explanation: I just took the quiz and got 100%
Korea was divided at 38th parallel