Science

What is the tough outer layer of a seed called?

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What is the ripened ovary of a plant containing the seeds?
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Which plant vessel is responsible for getting food and nutrients to the roots?
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Which of these is similar to the way sound travels?
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Which planet was discovered in 1781 with the help of Bode's Law?
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Which college features the Dooley Planetarium?
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What section of an insect's body are the legs and wings attached to?
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Awarded the Nobel Prize in 1977, John H. Van Vleck's area of expertise is in what?
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What is the hardest known natural material?
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