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Question: the stratospheric concentration of cfcs over antarctica a continues to...

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The stratospheric concentration of CFCs over Antarctica

a) continues to worsen every year, with a corresponding increase in the northern ozone hole.

b) continues to worsen each year, but the destruction is lessening over time, and should start to reverse itself in the next decade.

c) stays about the same size every year. There may or may not be an actual problem.

d) is typically smaller each year due to an international agreement to reduce the use of CFCs..

e) is no longer a problem.

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