Another key element of essay writing, is using grade level words. If you are writing an essay and you use the words: "Scentists say that a volcano will erupt soon." , you might want to change it to: " Scientists discovered that mount Super will erupt in the near future." Or: " Scientists' tests have indicated that mount Super will erupt in a short period of time." If you are in a younger grade, you can skip on this revision, but if you wish to make your essays better, you can still include this element. If you are in an older grade, essays may ask you to be more specific, using this rule.