How long is an Olympic swimming pool (in meters)?
What blood type qualifies as a universal donor?
What’s the most populous city in the United States?
In ancient Greece, throwing an apple at someone was a declaration of what?
How many hearts does an octopus have?
How many ribs are in a human body?
What is the loudest animal on Earth?
Which folktale inspired the Halloween Jack-o-Lantern?
What is the first color a baby can see?
Which is the most popular color around the globe?
