You got 18 out of 22!

We learn quite a bit about the various sciences in schools. Yet science is so much more than a subject studied in school. It provides the basic framework for the rules that govern the natural world. Did you know that according to scientists, the human nose can detect and recognize three trillion different scents? Here's another random factoid: there are more stars in the universe than there are grains of sand on Earth.

Biology, ecology, chemistry, physics, astronomy and even psychology are all covered in this super fun quiz of how the natural world works. Whatever your area of expertise is, you're likely to be challenged by some of these questions. If you want to learn more about science, this might just be the quiz for you. The majority of people aren't able to pass this quiz on their first try. Do you have what it takes to pass this quiz with flying colors? There's only one way to find out!