Which one of the following is an important fundamental assumption underlying the plate tectonic theory?

Question

Quizplus · Accepted Answer

The plate tectonic theory assumes that Earth's surface area has been essentially constant over time, meaning that new crust is constantly being created at mid-ocean ridges while older crust is recycled back into the mantle at subduction zones. This is also known as the principle of "conservation of mass" or "conservation of area." Therefore, choice D is the best answer, as A, B, and C are not fundamental assumptions underlying the plate tectonic theory.

Which One of the Following Is an Important Fundamental Assumption