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The air on Mars is composed of A. carbon dioxide, nitrogen, and argon. B. carbon dioxide, oxygen, and nitrogen. C. hydrogen, oxygen, and nitrogen. D. nitrogen, argon, and hydrogen.
The air on Mars is composed of: carbon dioxide, nitrogen, and argon.
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Asked 4/1/2014 11:00:38 AM
Updated 4/1/2014 12:06:49 PM
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The air on Mars is composed of: carbon dioxide, nitrogen, and argon.
Added 4/1/2014 12:06:49 PM
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How has modern civilization affected Earth’s atmosphere? A. by adding carbon dioxide and increasing ozone B. by depleting carbon dioxide and adding to the ozone C. by adding carbon dioxide and by destroying ozone D. by depleting carbon dioxide and destroying ozone
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Modern civilization has affected Earth’s atmosphere: by adding carbon dioxide and by destroying ozone.
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The planet Venus has active volcanoes that have resurfaced the entire planet within the last half a billion years. A. True B. False
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Updated 289 days ago|2/28/2018 4:30:19 PM
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The planet Venus has active volcanoes that have resurfaced the entire planet within the last half a billion years. TRUE.
Added 289 days ago|2/28/2018 4:30:19 PM
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