Structure and Composition of the Atmosphere Answers
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Which gas in Earth’s atmosphere forms ozone?
A
oxygenB
nitrogenC
water vaporD
carbon dioxide2
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Which characteristic describes the troposphere?
A
contains the ozone layerB
has the highest air pressureC
spans 12–50 km above EarthD
is a good place for planes to fly3
The image shows a representation of mountains of various heights, numbered 1, 2, and 3. The plain is labeled number 4.
A
1B
2C
3D
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