From solving for x to identifying the deepest trenches, prove you're officially smarter than a middle schooler (or at least better at baking bread).
Australia is commonly described as the only country in the world that is also what?
A continent
What Italian term describes vocal music performed without any instrumental accompaniment?
A cappella
Unlike many large predators, cheetahs usually hunt during which part of the day?
Daylight
Compared with orange juice, what does eating a whole orange provide more of?
Fiber
Which United Nations agency designated the Great Wall a World Heritage site in 1987?
UNESCO