Maybe you know more about one branch than the rest, or maybe you don't know much about any of them at all. Or maybe you'll impress us with your vast knowledge of the U.S. military! There's only one way to find out for sure. Take this quiz to see how much you know!
It's impossible to ignore any current news about Trump and his presidency, but how much do you know about his life before he took office? Let's go all the way back with this quiz. Find out exactly how well you know Trump!
So you've probably heard of biofuels, because people are talking about the topic a lot lately in relation to climate change and environmental issues. And you might have some idea about the difference between biofuels and fossil fuels. But beyond that, how much do you really know about them?