Question: Evidence indicates that Neanderthals had robust faces and large canines in order to withstand considerable stresses. One theory, based on the wear on teeth is that they... Group of answer choices ate foods much tougher than their contemporaneous Homo sapiens cousins. had chronic anxiety caused teeth grinding (TMJ). were chewing up rocks for the pigments for cave paintings. were using their mouths to chew hides and other nonfood material. Need Assignment Help?