Unless you have an adverse reaction [1] to eating nuts [2], chances are they play a significant role in your regular diet. Nuts are not only satisfying, but they're also a natural source of protein.

To honor the fact that today is National Nut Day, I'm going to see how well you know your nuts. Here's the deal: I'll flash a picture of a nut shell, and I want you to guess which type of nut it is. Are you ready to go nuts? Let's begin!

Source [3]