Yes, Article V provides for changing the constitution by adoption of Amendments and spells out the procedure for doing so.
it changed by... well it changed... It just changed!
a changed variable is something that you have changed
a changed variable is something that you have changed
They have changed brick work and changed windows
no lens is changed!
Both "is changed" and "has changed" can be correct depending on the context. "Is changed" is typically used when referring to the current state of something, while "has changed" is used when talking about a change that occurred in the past with a connection to the present.
It means she changed you. Or you changed your self.
Technology changed so designs changed.
= "How has collecting changed?" ??????---what =
If they get changed
it was changed to istanbul. This is wrong^
it has changed most of the world