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5 Cards in this Set
- Front
- Back
What is the name given to the envelope of gases surrounding our planet?
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The atmosphere
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The discovery of oxygen is credited to what two men?
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Scheele and Priestley
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Who discovered nitrogen?
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Daniel Rutherford
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What percentage of the atmosphere is oxygen? nitrogen?
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Approximately 21% is oxygen, and about 78% is nitrogen.
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What are the names of the two layers of the atmosphere, based upon composition?
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The homosphere and the heterosphere.
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