How did humans spread around the world?

The amount of alcohol in the blood is referred to as.what? Is there a diet designed for someone with type O negative blood? What is the medical term meaning triangular or wedge-shaped patch of blood-vessel-engorged tissue on the conjunctiva? What colour eyes does Rudolph have? Are blood gases usually drawn from a vein in the arm? What does it mean if you cough a lot? Can people with Down syndrome smoke and drink? What is an unhealthily fat person called? What is breathing therapy? What kind of doctor deals with blood transplant? When was pink eye discovered? What initial sound is made loud by the resonators into intelligible sounds such as tongue teeth lip soft and hard palate? Where does ulcers come from? In dentistry is it good practice to make a bridge connecting a missing L front canine eye-tooth to the adjacent incisor immediately after extracting the eye-tooth? What type of disorder is this Unusual eating patterns that are not severe enough to be classified as a specific eating disorder? Is an antacid medicaine reacting with stomach acid an example of a physical rather than a chemical change? Which term describes the beginning of the menstrual fundtion that occurs at the onset of puberty? What are hernia symptoms? What size breasts are kiele sanchezes? Could gum disease cause high white blood count?

How did humans spread around the world?