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:
Only the Congress or the states can actually CHANGE the Constitution. The only way to actually CHANGE it is via a constitutional amendment. Congress or the states can initiate that, and the amendment has to be ratified by a fixed number of states before it takes effect. We've got 27 amendments, the most recent as of 1992. The Constitution can also be changed at a Constitutional Convention, but none have been done that way since the 1700s. There was a movement in the 1990s to call a Convention to make a Balanced Budget Amendment, but it never succeeded. The Supreme Court can INTERPRET the Constitution, but can't change it.