Prehistory.
Because people did not have any form of writing or written language nothing in that time could be recorded or documented.
The answer is SPHERE. The center of the sphere should also be the center of the great circle. If this is not the case, wherein let's say the center of the sphere is not the center of the circle, then this would refer to a small circle. What goes through the center of the sphere is known as the great circle.
If precipitation exceeds evaporation then water can run off the hillsides and form standing water in the depressions or on a larger scale can form lakes of various sizes if it is normal for precipitation to exceed evaporation for most of the year.
Answer:
a
Explanation:
In plate tectonics, a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys.
It takes less time for smaller rocks to wear away because they are constantly moving