Biology , does it need upper case or lower case

Biology is not capitalized because it does not come from a proper noun. Such as English. English is capitalized because it comes from the proper noun "England" but biology does not come from a proper noun, so it stays lower case.

It needs to be capitalized, Biology, because it's a subject that you learn about in school. Like Math, Science, English, Art, P.E. (well that one is all capital, but I think you get the point).
I hope this helps. =^p

Ifound this on google “what are motifs? a motif is a literary term that is an idea, object, or concept that repeats itself throughout a text. a motif gives clues to theme or reinforces ideas an author wants to emphasize.” i hope this for what your looking for