almost positive astronomy and geology courses count; less sure about nutrition.
you have to do what you have to do, but i wouldn't take a ton of these courses as it will be sort of obvious. better off to take upper division biology courses that not only look impressive but will be super helpful once you get to med. of course these will require more work but ya can't take the path of least resistance and still expect to make it happen. i know science gpas suck, i've spent 2+ years trying to dig mine out of a hole. good luck!!