If you are writing an essay comparing two or more things, it is best to start off with some sort of statement of intent. For example: Although Velociraptors and Tyrannosaurus Rex are both dinosaurs and share a number of characteristics, they actually exhibited different hunting patterns with the T Rex hunting alone and the Velociraptors hunting in groups.
Once you've set up your comparison, you can then go into detail in the body of the essay. Your concluding paragraph may refer back to your opening sentence as you wrap up your argument.
Once you've set up your comparison, you can then go into detail in the body of the essay. Your concluding paragraph may refer back to your opening sentence as you wrap up your argument.