Based on clarity, brevity, interpretation of data and comparison with other published work. Based on conciseness. One last comment on style - for many of you, this may be the first time you have written a paper in scientific form. It is quite different than writing a standard term paper in English 104. For instance, do not use footnotes at the bottom of a page.
Footnotes are acceptable in tables if correctly done and used sparingly.
Look at a recent article in the Journal of Wildlife Management or the Journal of the Fisheries Research Board of Canada. Note the title is all in caps, is left justified, and does not contain a scientific name. The author's name and address is left-justified with the authors capitalized. Scientific names are used here when all common names are first introduced. After the abstract there is a solid line all across the page, etc., etc.