HELP ILL MARK BRAINLIEST!! what do you think accounts for the differences in the skulls and species? how might some of these differences be possible adaptations?

As the species evolved, the Foramen Magnum shifted positions due to the placement of the spinal cord. Due to evolution, the backs of these species became vertical rather than horizontal as well as the brains began to increase in size resulting in a larger skull shape.

Explanation: Hope this helps

d) post-world war i