Question

why both mesa and butte have concave slops

Answer 1

Buttes are smaller flat topped mountain or hills with steep slopes on all sides. They are tropically topped by a hard cap rock that is resistant to erosion protect the softer lower layers beneath .Mesas maintain their shape because their cap rock offers protection to the layers of softer rock beneath.

Answer 2

Answer:

Explanation:

Buttes were once part of flat, elevated areas of land known as mesas or plateaus. In fact, the only difference between a mesa and a butte is its size. Most geographers say a butte is taller than it is wide, while a mesa is a much larger, slightly less elevated feature.