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:
Another way the Constitution's meaning is changed is often referred to as informal amendment.. This phrase is a misnomer, because there is no way to informally amend the Constitution, only the formal way. However, the meaning of the Constitution, or the interpretation, can change over time. There are two main ways that the interpretation of the Constitution changes, and hence its meaning.