The frontal bones form the bony eye brow ridges.
The absence of ridges on some quarters is due to the coin's manufacturing process. Quarters without ridges are known as "smooth edge" quarters and are commonly found in uncirculated coin sets or special collector's editions. These quarters are legal tender and can be used just like regular quarters with ridges.
Supraorbital notch ---> this is incorrect, for it is the frontal bones that conform the eyebrow ridges, not the supraorbital notch. The supraorbital notch, located on the eyebrow ridge, primarily serves as a groove/ passageway for superficial and/or deep sensory nerves.
That special material is called as red bone marrow. You have red bone marrow in the skull bones, vertebrae, pelvic bones, ribs, scapula and sternum. In case of children,you have the red bone marrow in the cavity of the long bones, in addition to above mentioned flat bones.
Soil erosion is a special concern for deserts and mountain ridges because these areas have limited vegetation to hold the soil in place. The sparse vegetation in deserts and mountain ridges increases the likelihood of erosion by wind or water. Additionally, the steep slopes in mountain ridges can lead to rapid movement of soil during erosion events.
what disease or problems we encounter without the special functions of the bones
Many bones have ridges and protuberances which provide an area for muscle attachment.
They are hollow and light.
Periosteum
Because it has special rocks and dinosaur bones in the coastline.
cartlage
Supraorbital notch ---> this is incorrect, for it is the frontal bones that conform the eyebrow ridges, not the supraorbital notch. The supraorbital notch, located on the eyebrow ridge, primarily serves as a groove/ passageway for superficial and/or deep sensory nerves.