I'm filling out a grad application to Berkeley, and one of the forms has the title "Publications and Presentations" and asks I have no publications and I haven't given presentations in the context of a conference or the like, so it seems reasonable to leave this blank. However "presentations" sounds vague. For example, what about 1) Talks I've given? For example in student seminars? 2) Defenses of (bachelors/masters) projects? Would it make sense to mention those instead of leaving it blank?