Science

What is matter that doesn't allow light to pass through called?

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Which scientific term means "curved inwards"?
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What is the 6th planet from the sun in our solar system?
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Which is also called the "Root of Life" or "Man Root"?
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Absolute Zero Temperature is reached at?
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What fraction of Earth's gravity is the Moon's gravity?
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Mariner IV sent the first pictures of which planet back to earth?
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In math, "pi" is equal to?
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Which of these measurements would be different on Mars than on Earth?
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