How do bone markings on modern human skeletons relate to bone markings found on the fossils of common ancestors?

Explanation:

As with the other markings, their size and shape reflect the size of the vessels and nerves that penetrate the bone at these points. ... The surface features of bones depend on their function, location, attachment of ligaments and tendons, or the penetration of blood vessels and ner

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

i think its y= -4x-14