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:
The Framers didn't want the Constitution being changed on a regular  basis for any other reason aside from one of the utmost importance.  As a result, while there is an invo â¦ lved process, with mandatory  approval required from the different houses of Congress, amending  the Constitution is possible if needed.