1 Simple molecules [molecule: A molecule is a collection of two or more atoms held together by chemical bonds. 2  It is the smallest part of a substance that displays the properties of the substance.
Eon has a number of meanings. In Astronomy, an eon refers to 1 billion (109) years. But it also refers to a very long, unspecified period of time, or specific geologic stages of the Earth.
25th Infantry Division Equal Opportunity Team. What is EO (reason for EO) The Division Equal Opportunity Office is a member of the Commanding Generalâs personal staff providing guidance to the commander regarding equal opportunity issues. The EO system consists of Officers and NCOs serving as Equal Opportunity Advisors (EOA).