How much do you know about being energy efficient?

After surfing the web, trying to kill time, I came upon a cool site from National Geographics, which has various quizzes you about different environmental topics and is a very fun way to learn different things about the ways you can save energy and how much energy we are unnecessarily wasting. I only got one question wrong. Go to http://www.thegreenguide.com/quizzes to test and see what you really know about the environment.
-Eric M.