Science

Which of these best describes how light travels?

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When we add two forces, what do we call the answer?
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John Glenn was the first American to orbit the earth, in how long a flight?
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How many days was Skylab III in space?
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Which of these is a type of wetland?
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What are plants that grow, flower, make seeds and die in one year?
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What was the name of the first artificial satellite launched into space?
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What is the largest known land animal?
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Where is the asteroid belt found?
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