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Earth
What mineral makes both sapphires and rubies when cut and polished?
Earth
What mineral makes both sapphires and rubies when cut and polished?
Corundum
Apatite
Fluorite
Topaz
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Which of these is the first step in the making of a fossil?
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Which of these is a body of salt water?
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What two countries lie on opposite sides of the Juan de Fuca Strait?
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What is the name of the galaxy in which the Earth exists?
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What type of landscaping is used to help conserve moisture?
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What is a plant with no internal system of tube like structures called?
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What does Earth do to cause night and day?
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