Why is the female and male skull different?

The female and male skulls differ primarily due to evolutionary adaptations related to reproductive roles. Female skulls typically have a wider pelvis and more rounded features to accommodate childbirth, leading to a broader and more rounded skull shape. In contrast, male skulls tend to have more pronounced brow ridges, larger mastoid processes, and more robust overall structures, reflecting greater muscle attachment and physical strength. These differences are influenced by hormonal factors and genetic variations over time.