Year 12s: what will be the first way you research your future options? >>

Is natural science good to become a teacher with?

hey currently studying biology, chemistry and business(A2 ) I wanted to study natural science so that I could take a few physics modules, then take mostly chemistry and biology modules I had an A at GCSE maths and would be willing to catch up to at least AS level during the 5 months I will have off.
This route into teaching interests me the most as I would like a broad understanding of science however,
Would I be able to get funding for my teaching ? (Or does my degree have to specialize in a particular science eg biology)

qualifichttp://www.education.gov.uk/get-into-teaching/funding/undergraduate-fundingation?

Or would I be better off just taking regular biology(To ensure funding) and then only being able to teach biology and chemistry.