Age, Diet, lifestyle choices, environment and RES
The mechanism of enzymatic action within a single substance
This question is unfortunately incomplete. However, the general skull features of <em>H</em><span><em>omo heidelbergensis </em></span>include large brow ridges, a broad, sloping forehead and a rear skull wall that is vertical rather than rounded or sloping.
The key difference between hominins and all other anthropoids is that hominins have bipedal posture, which plainly put means that they walk on two feet.