Sub-Saharan Africa's equatorial area is known as Equatorial Africa. There are 13-14 nations, so I'm guessing you want Ethiopia, Rwanda, Kenya, and Somalia, which are the most well-known. Savannas in the north and south, as well as mountains and tropical rain forests, characterize the landscape.
A geographic coordinate system<span> or a GCS uses a three-dimensional spherical surface to define certain locations on earth. Also, a GCS is often mistakenly called a datum, but a datum is just one part of a GCS.
Finally, a GCS includes a prime meridian, </span><span>an angular unit of measure, </span>and a datum :)
Answer:
Weathering makes the rocks smooth