Simplify the following text for a Grade 9 native English-speaking person.
Original: The Constitution is now different from the original Act , as the Australian people can change the Constitution , by referendum . However , the original Act remains on the UK 's law book with a note saying , `` The Constitution is not necessarily in the form in which it is in force in Australia '' .
Simplified: For the Constitution , the impact of these two laws is that the Constitution as in force in Australia is now separate from the text in the original Act .