Something simple? Hmm, how about a diagram of a fod chain? Its simple, if you dont have a printer to print the images of a food chain, or animals, then just try to draw it the best you can... Make it into a poster, write some information about the animals, who eats who, are they a carnivor, herbivor, you know... Stuff like that :) ~.~.~.~.~.~.~.~. <em>Hope this helped! :)</em>
The main difference between the step-up and step-down transformer is that the step-up transformer increases the output voltage, while the step-down transformer reduces the output voltage.
