Science

What is the name for a tool that makes work easier to do?

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Who was the first woman to win the Iditarod sled dog race?
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Which bridge has the longest span in the U.S.?
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Which of these is considered "work"?
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During the seventeen hundreds, what creature was thought to excrete blood through its skin?
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Absolute Zero temperature is?
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Which of these is a cause of water pollution?
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The definition of "a physical unit of storage on a computer disk or tape" best fits which science term?
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Who is responsible for the Lost Continent of Atlantis theory?
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