How would you start a 7-paragraph article explaining what bacteria is, oral bacteria, and bacteria and bottled water?

I would start it out with an opening paragraph such as this "Bacteria spreads throughout the world. Bacteria is a member of a large group of unicellular microorganisms. Each unicellular microorganisms have cell walls but lack organelles and an organized nucleus. Bacteria may be the same in your eyes but open them up and really see what bacteria is. You probably thought you were safe drinking bottled water but there is bacteria is bottled water too!"

I would ask the reader what they really know about bacteria and its forms, and try to lay in a few facts here and there. You want to try and include a general "summary" of facts that your will be presenting throughout your article. See how you can relate bottled water to bacteria and really build off of that topic trying to pull in or hook the reader with interesting fact and things that can be applied in a life situation that will provide a benefit for the audience that you are targeting. I really hope this helps, and I am sorry I couldn't tell you exactly what to say but I hope that you take my answer into consideration! :)