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Category: Grade 4

Why is it so hard for firefighters to put out wildfires?

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How do polar bears walk on ice and snow?

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Why do leaves change color in the fall?

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Why are tornadoes so hard to predict?

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How dangerous is it to look at the Sun?

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How do polar animals survive the cold?

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Why does it get dark during a solar eclipse?

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Why do leaves change color in the fall?

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How is glass made?

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How is money made?

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