So i need to take environmental science 1b03, however i cant because it takes place at the same time as one of my other course (bio 1mo3) at 8.30 am. I cant change into any other cores because they are full, idk what to do . i have two other courses that also deal with the same issues ....what should i do ?
is there a way i can request a seat in another core ?

If environmental and your other courses that are in conflict are required courses for second year then i am pretty sure that if you speak with your academic adviosr s/he will be able to help you out. They can get you in courses that are full if they are required courses.

you can also email the prof to see if they will be able to let you in another core. another option is to stay registered in your current core and just attend the lectures of another core. i dont think this should be a problem since first year classes tend to be big, unless of course there are attendance requirements etc.