"Biology is a process ~ life itself ~ not something you "believe"."
Logus-study. Bios-creatures. You can call it modern "study of" biology. Same thing, but redundant.
Like astronomy, biology is a field of science. Like astronomy, biology is rooted in mystic/supernatural past. Today(at least in the west), both have become rational and have rid themselves of supersitions. My point is that evolutionary theory(not creation philosophy) is a fundamental part of modern biology.
Hmm, astronomy once more stepped out into the great unknown when the visible universe dropped below 5%(with "dark energy".