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doit_the_clown doit_the_clown
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7 years ago
The gas temperature in the stratosphere of the Earth's atmosphere reaches a maximum at about 50 km. The cause of this is
A)   the absorption of solar ultraviolet radiation by ozone (O3).
B)   heating by auroral activity higher in the atmosphere.
C)   the ionization of oxygen and nitrogen by solar ultraviolet radiation.
D)   turbulence, caused by wind and weather.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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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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papachulopapachulo
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7 years ago
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Just got PERFECT on my quiz
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I appreciate what you did here, answered it right Smiling Face with Open Mouth
yen
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2 hours ago
Brilliant
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