The body paragraphs will explain your essay's topic. Each of the main ideas that you listed in your outline will become a paragraph in your essay. If your outline contained three main ideas, you will have three body paragraphs. Start by writing down one of your main ideas, in sentence form.
If your essay topic is a new university in your hometown, one of your main ideas may be "population growth of town" you might say this:
The new university will cause a boom in the population of Fort Myers.
Build on your paragraph by including each of the supporting ideas from your outline In the body of the essay, all the preparation up to this point comes to fruition. The topic you have chosen must now be explained, described, or argued.
Each main body paragraph will focus on a single idea, reason, or example that supports your thesis. Each paragraph will have a clear topic sentence (a mini thesis that states the main idea of the paragraph). You should try to use details and specific examples to make your ideas clear and convincing.