I've worked a lot of jobs during my undergrad, many of which were seasonal. Listing all those jobs and tasks takes up about a page. Then throw in my education, internship, volunteer work, achievements, and affiliations... Well, I've got myself three pages. I've already taken out some volunteer work and kept what I thought was important to me. What about work? Should I take out some jobs, but list them all on the application itself?
Also for my volunteer work I just listed the entity I volunteered with, my title, and dates. I didn't list any tasks. Should I do that? If I do that will just add more length to my already lengthy resume

Thanks so much!