Science

What is the hardest known natural material?

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Which of the following is a type of cloud?
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What unit is force measured in?
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Which parts of a nerve cell send out signals?
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Which scientific term is best defined as an electrically charged atom?
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The term, "black hole", was named by American physicist, John Wheeler, in which year?
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What do our bodies need from the air we breathe?
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What is another name for a volt-ohm meter?
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The science term, "agronomist", is best defined as?
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