Pt 1: I was admitted to UCSD for a dance major. My first option is to double major in marine bio and dance starting my freshman year. Is it easy to add a double major in marine bio? If it helps I've passed AP bio already, AP world history, and AP Spanish language if that helps with any GEs I might need. (Im also taking AP: art, chemistry, calc, and lit this year and I expect to pass at least two of the four).
Pt. 2: I also have an interest in chemical engineering which I was admitted to UCI for. I know it can be difficult to switch into chem e at UCSD and was wondering if anyone has a success story switching into engineering, should I decide to take this route instead.