Earth
Approximately what fraction of the Earth's air is made up of oxygen?
More Questions from Earth
What is the name for huge waves that are often caused by an underwater earthquake?
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What is the name of the submerged fringe of a continent?
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What "flow" causes a buckling effect in the jet stream?
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What is the most photographed, painted, and scaled mountain in the world?
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What two countries lie on opposite sides of the Juan de Fuca Strait?
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What igneous formation is usually seen in the core of folded mountains?
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