What trends that took place during the course of human evolution? how did the cranium (shape, cranial capacity, size and shape of face, prognathism/orgnathism), dentition (size of the teeth, shape of the dental arcade, cp3 complex), limb proportions, and pelvis morphology (shape of the ilium) change from the australopithecines up through modern humans. be able to provide hominin examples to illustrate these changes.

1)The evolution of modern humans from our hominid ancestor is commonly considered as having involved four major steps: evolving terrestriality, bipedalism, a large brain (encephalization) and civilization.

2)

the ileocecal valve (also called bauhin valve), which limits the rate of food passage into the cecum and may prevent material from returning to the small intestine.

answer: no, they are not.*

although rubber bands that contain excessive amounts of dye, toxins, or additives are sometimes toxic, most rubber bands do not cause any health issues. since they are typically made of latex, (a natural substance that is extracted from trees) they are not dangerous in any way if you chew them or accidentally ingest a piece of rubber band. however, chewing rubber bands does pose a choking hazard and is not a good habit to have.

*depending on the type of rubber band. the typical rubber bands that you see at stores are not toxic, but other types of rubber or latex that contains certain chemicals may be unhealthy and hazardous.