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staedtler staedtler
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7 years ago
What is the current status of the Earth's ozone layer?
A)   The layer is being irreversibly depleted and will probably disappear entirely within the next 200 years.
B)   The layer has been distorted—too thin at the poles and too thick over the equatorial regions.
C)   The layer has been somewhat depleted but, if left alone, it could restore itself in a century.
D)   The layer has become too thick and is moving downward toward the surface, where its heating qualities contribute to global warming.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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staedtler Author
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7 years ago
Grinning Face Exactly what I needed
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