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doit_the_clown doit_the_clown
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7 years ago
The chemical constituent that absorbs UV radiation in the stratosphere of the Earth's atmosphere, thereby heating these layers to relatively high temperatures, is
A)   N2, nitrogen.   C)   H2O, water vapor.
B)   CO2, carbon dioxide.   D)   O3, ozone.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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doit_the_clown Author
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7 years ago
Correct Slight Smile TY
Lawson1981
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I appreciate what you did here, answered it right Smiling Face with Open Mouth
veronee_madison
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2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
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