AP Environmental Science

Hi, I am currently a junior. I am taking Ap Physics 1, and the teacher I have is said to be a fun, yet difficult one. Currently, I am not sure whether I should switch into AP Bio or AP enviornmental science. I am most likely going to bite the bullet and take the challenging, yet rewarding physics, but I dont know if I should switch into bio because Ive never really given it a chance since Ive always wanted to be an engineer, and know that I may want to switch, when I look back, I didnt think it was that bad when I took bio honors. My other choice is Ap environmental science. The issue with this is that my school offers it as an elective, so I am not sure if when applying to college, they will view it as an elective AP course, like psychology, or will count that as one of my full year science courses. As I said, I am most likely to take physics, since I want to go into either engineering or computer science, and take a B in the course, which I dont mind, but I just want to know as backup what are your ideas on whether colleges will view it as a full year normal science or not.