it formed from ancient sand dunes.
The frontal bones form the bony eye brow ridges.
Friction ridges or fingerprints are formed by the patterns of raised skin ridges in the papillary layer of the dermis. These ridges are made up of dermal papillae, which project into the epidermis and create unique patterns that form fingerprints.
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
Papillary ridges form from fetal development in the womb and are not fully understood. The ridges are believed to be a result of genetic and environmental factors influencing the growth and development of the skin layers on the fingertips. The unique patterns of papillary ridges are established early in development and remain unchanged throughout a person's life.
Moraines
they form around mid-ocean ridges
Mid-ocean Ridges.
divergent boundaries
Rift volcanoes.
A moraine forms by sediment ridges. 👍 or 👎