Earth

John Glenn first orbited the earth in what year?

More Questions from Earth
Approximately what fraction of the Earth's air is made up of oxygen?
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What evidence tells scientists that some dinosaurs may have lived together in groups?
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What is an uplifted area with a flat top called?
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What layer of the Earth is right below the crust?
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What kind of calendar traditionally predicts the weather?
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Although beaches can be comprised of any particle, the majority of them consist of what?
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What is the very bottom soil horizon called?
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Which of these is not a metamorphic rock?
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