Science

What does a ruler measure?

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If you are caught in a sudden heavy rainfall of a showery nature, you are caught in a what?
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Where is the great dark spot located?
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What breed was Dolly, the cloned sheep?
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How long, in kilometers, is the average single thread unwound from a silkworm cocoon?
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What space object did some ancient cultures rely on to tell the passage of time?
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The Horsehead Nebula can be found in what constellation?
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What type of root does grass have?
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What do our bodies need from the air we breathe?
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