Gosh, how's that for efficiency?

I finally found the section of the Teach First website where you can submit questions, and got an answer within about thirty seconds. Which was pretty incredible given that careers enquiries often take days and days. The answer, incidentally, is that you can teach more than one subject but you have to have 40% of a degree in each subject you want to teach. (I figure that since their application form doesn't break down 'science', and my degree is 100% Natural Sciences, I should be OK; but I'd only actually find out by applying of course).