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What Is a Spit Valve?
We don’t mean to toot our own horn, but we think today’s Wonder of the Day will be music to your ears.
What Is a Spit Valve?
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How Many Sports Are in the Olympics?
If you’re coming to Wonderopolis today, you’d better be ready to play!
How Many Sports Are in the Olympics?
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How Many Countries Participate in the Olympics?
Today’s Wonder of the Day celebrates the countries that come together to compete for gold!
How Many Countries Participate in the Olympics?