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.
AEGEAN CIVILIZATION. The earliest civilization in Europe appeared on the coasts and islands of the Aegean Sea. This body of water is a branch of the Mediterranean Sea. It is bounded by the Greek mainland on the west, Asia Minor (now Turkey) on the east, and the island of Crete on the south.he war against Troy took place in the 13th or early 12th century BC The Minoan Civilization The origin of the Minoans is unknown, but by 1600 BC they dominated the Aegean region. They lived on Crete from about 2500 BC to 1400 BC, when they were conquered by Mycenaeans from the Greek mainland.