Common Design Features: All spring aligners are available for both arches. Standard design is 3-3, although 4-4 is very common & often used when canine correction is desired. Wraparound designs are also available with Mushroom & Super Spring designs.
exists and is an alternate of . The most generally accepted scientific theory states that the first humans (defined as members of the genus Homo) originated in Africa. The oldest known fossil of a human ancestor (a female Ardipithecus ramidus specimen nicknamed Ardi, 3.2 million years old) at a site called Aramis in the Middle Awash region of the Afar Desert in Ethiopia.
What We Really Know about the Origin of Humans. The origin of humans is most certainly one of the most contentious points of evolutionary theory. Many people who believe in the God of the Bible accept that evolution created the animals but they still believe that humans (or at least their souls) were created by God.