Earth

78% of the earth's atmosphere is composed of which gas?

More Questions from Earth
A weather proverb says "A year of snow," followed by what?
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What is the name given to a fossil that best defines a rock layer's age?
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What "foggiest" world capital averages 47 fogs a year?
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On which canal would a traveler find Port Said?
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Cumulus and stratus are types of what?
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What reef is the largest living structure on Earth?
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What makes Florida's Tampa Bay a unique aquatic environment?
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What is the imaginary line that runs from the North to the South Pole called?
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