I take back the Astronomy, as long as it includes Astrophysics. Not the rest. Biology is applied chemistry and chemistry is applied Physics.

I count how much of a science it is by the amount of math you need to do it. The count at biology is zero, which means it's only studying nice pictures of bodies, which means that the local kids who managed to get hold of a playboy are as much of a scientist as that.

Just joking, but I do stand behind the fact that it isn't a science

edit: Actually, now that I think about it, my friends back in the US and me once had a talk about that none of the things ending on -gy is a science, but that was let go because of metrology, which is a science.