I get the strong feeling that you want to study a scientific discipline but are feeling the need to justify it to parents as being a good job with prospects.
If that is the case and you really love a subject you have to study that - You will do far better studying a subject that you love than one you hate.
Would your parents rather you graduated with a third in accountancy or a first in Physics?
My degree was in Astronomy and Physics and after graduating I spent a couple of years working as a scientist for the Atomic Energy Authority on nuclear fusion experiments. It was poorly paid and I soon left to work with computers which was much better paid but I don't regret my foundation in science.
This is a good site for jobs in science - it should give you an idea of what's out there right now
http://www.newscientistjobs.com/search.action
Oh and Don't get side tracked by "University of life" types telling you to get experience of the real world. If this country is to compete in the coming century we will need all the scientists and engineers we can muster
Best of luck