Well I would say drop bio of you don't have interest in science cause bio only important in medicine field. Chemistry sort of a middle subject and most probably can't be dropped. Usually ppl in college will take Chem and physics (engineering) or bio and chem (medicine). True that many regret pure science. My old private school only got 7 class science and 1 art class. Now out of my closed group of 10 friends all went to persue law and business and I'm the only one doing engineering lolz