blood type. Any of the four main types into which human blood is divided: A, B, AB, and O. Blood types are based on the presence or absence of certain substances, called antigens, on red blood cells.Also called blood group.lood type. Any of the four main types into which human blood is divided: A, B, AB, and O. Blood types are based on the presence or absence of certain substances, called antigens, on red blood cells.
Amendments are sent to the legislatures of the states by default. Only one amendment, the 21st, specified a convention. In any case, passage by the legislature or convention is by simple majority. The Constitution, then, spells out four paths for an amendment:
Article Five of the United States Constitution describes the process whereby the Constitution may be altered. Altering the Constitution consists of proposing an amendment or amendments and subsequent ratification.e do not find anything in the article which suggests that an amendment once proposed is to be open to ratification for all time, or that ratification in some of the states may be separated from that in others by many years and yet be effective.