Science

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

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What process refers to the joining of pollen with an ovule to form a seed?
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What scientist is credited with developing the first vaccine?
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Who was the first person to use a telescope for astronomy?
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What is the term given to heat and light radiated from the sun?
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What body process helps keep you cool?
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What scientist discovered that sunspots occur in an eleven-year cycle?
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Which unit can we use to measure a magnetic field?
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How many tiles make up the outer "skin" of Spaceship Earth, in EPCOT?
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