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What Is K-Pop?
We’re glad you’ve POPped into Wonderopolis for another great Wonder of the Day!
What Is K-Pop?
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Why Is Blood Pressure Important?
We don’t want to pressure you, but we hope you’ll join us in Wonderopolis today!
Why Is Blood Pressure Important?
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How Many Times Does Your Heart Beat in a Lifetime?
You just can’t BEAT today’s Wonder of the Day!
How Many Times Does Your Heart Beat in a Lifetime?