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Praxis Earth And Space Sciences Content Knowledge (5571 5572) Practice Test

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Which of the following is not an atmospheric layer?
Correct Answer:
Lithosphere
Explanation:
The lithosphere is not an atmospheric layer; it’s the rigid outer shell of the Earth—the crust and upper mantle—part of the geosphere. The troposphere, stratosphere, and exosphere are all layers of Earth's atmosphere, with the troposphere closest to the surface (weather happens there), the stratosphere above it (contains the ozone layer), and the exosphere as the outermost, extremely thin boundary toward space. So the non-atmospheric one is the lithosphere.

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