it formed from ancient sand dunes.
The frontal bones form the bony eye brow ridges.
Divergent boundaries form ocean ridges.
Dermal ridges cause the overlying epidermis to form epidermal ridges. Collectively these ridges are called friction ridges.
folding uplift and erosion
Jagged ridges that form on mountains are called "knife-edge ridges" or simply "knife ridges." These ridges are narrow, sharp, and often dangerous to traverse due to their steep drop-offs on either side. They require expert mountaineering skills to navigate safely.
mountains form by mid-ocean ridges
Mid-ocean Ridges.
Moraines
they form around mid-ocean ridges
Rift Valley and Ridges
divergent boundaries
mid ocean ridges form along, underwater mountain ranges that sometimes have a rift valley down their center( 6th grade answer)