B6

a. An amendment can proposed in Congress. For it to then be presented for ratification it must be voted on and receive a 2/3 vote in both houses of Congress.

To be ratified, an amendment must either be voted "yes" by 3/4 of State Legislature or voted "yes" by 3/4 of State Conventions.

b. The constitution can be informally amended by the development of technology. For example, when the constitution was written, the President did not have the power of dropping an Atomic Bomb because they didn't exist. Because he/she is commander in chief, however, that power became part of the constitution when the technology was developed.

The constitution can also be informally amended by Judicial Review. For example, the Supreme Court decided in Plessy vs. Ferguson that discrimination was legal...but many years later in Brown v. Board found it unconstitutional.

c. Informal methods are used more frequently than the formal methods because they are much simpler.