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What is the ratio of the light-gathering power of a telescope with a primary lens of diameter 10 m to a telescope with a primary lens of diameter 1 m? 10 to 1 1 to 100 1 to 10 100 to 1
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What group has historically made up the largest portion of immigrants in mexico?
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Which of the following statements describes a similarity between the earthquake in haiti and that in chile?
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What is the ratio of the light-gathering power of a telescope with a primary lens of diameter 10 m t...
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