At Deakin you can undertake a ‘combined’, or as they are sometimes described, ‘double’, degree. Examples include:
See http://www.deakin.edu.au/future-students/courses/
Undertaking two degrees concurrently allows you to graduate sooner and it ensures that, when you graduate, you have up to date knowledge of two discipline areas. At a later time you may chose to undertake a graduate program in an area of special interest to you.
Of course, if you are not really sure what you want to study you can undertake a generalist degree such as Arts, Science or Commerce and then another degree such as Law or Teaching, rather than studying the two concurrently.