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What Are Fossil Fuels?
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How Did the Teddy Bear Get Its Name?
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What Is Gasoline Made of?
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What Is a Hybrid?
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Why Do Bubbles Float?
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Where Do Political Symbols Come From?
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Why Do I Burp?
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Where in the World Is Myanmar?
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Why Do I Have Bad Breath in the Morning?
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How Many Languages Are Spoken At the U.N.?
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Is Dry Ice Really Dry?
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How Does an Engine Work?
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Does Temperature Affect the Bounce of a Ball?
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Does Matter Really Matter?
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Why Aren’t There More Holidays?
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What Is the Color of Fire?
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What Is Chlorine?
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Why Are Some Drinks Bubbly?
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Why Do Onions Make You Cry?
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What Is Presidents’ Day?