Diatomic molecules are molecules composed only of two atom s, of either the same or different chemical element s. The prefix di-means two in Greek. Common diatomic molecules are hydrogen (H 2), nitrogen (N 2), oxygen (O 2), and carbon monoxide (CO).he bond in a homonuclear diatomic molecule is non-polar and covalent. In most diatomic molecules, the elements are nonidentical. Prominent examples include carbon monoxide, nitric oxide, and hydrogen chloride, but other important examples include MgO and NaCl.
Africa, which developed the world's oldest human civilization, gave humanity the use of fire a million and half to two million years ago. It is the home of the first tools, astronomy, jewelry, fishing, mathematics, crops, art, use of pigments, cutting and other pointed instruments and animal domestication.In short Africa gave the world human civilization.illions of years ago human life started in Africa, Australopithecus aphaeresis and Australopithecus africanus and Australopithecus robustus were all key rungs in the development of humanity.
The first banking crisis. In West Africa, the Mali Empire was so rich, in 1324 its king caused inflation in Cairo by the amount of gold he took on his pilgrimage to Mecca. The powerful Songhay and Ashanti kingdoms also flourished in West Africa. Africa is thought to be the first continent on earth where humans lived. In Africaâs early history, groups were hunter-gatherers following a nomadic lifestyle. Small communities settled in fertile areas and began defending their local territory. From 1000AD onwards, larger African kingdoms formed.