The first thing you need to do after reviewing numerous ecology essay topics and choosing one is to make an outline for your essay. You can do this by taking all of your notes, instructions from your teacher and ideas and gathering them in one physical place. Sort through everything to determine if you really need all of it, and toss what is unnecessary. Next, start putting things in order. What goes in your introduction, middle and conclusion? Organizing your stuff ahead of time will save you time later.