Science

What is the hardest known natural material?

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Colors other than white, black and the pure greys are known as what?
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What is the name for a body in orbit around the Sun?
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Which of these is a virus that doesn't immediately cause damage to tissue?
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What season is between winter and summer?
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What unit is force measured in?
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Which planet of our solar system has the most known moons?
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Which man-made waterway is 100.76 miles long?
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What are the big holes and dents found on the Moon called?
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