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.
  A:The first modern humans (Homo sapiens sapiens) appeared on earth around more than one hundred thousand years ago. They began to replace Neanderthal man (Homo sapiens neanderthalis or, more recently, Homo neanderthalis) in Europe around 50,000 years ago.ho they were and what they did represents a large field of study, pursued by Archaeologists, Anthropologists and Evolutionary Biologists. 1  According to Quran, Adam & Hawa were the first humans born on earth. 2  According to the Bible (Genesis Chapter 4), the first born person on earth was Cain, the child of Adam and Eve.