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The little girl listen to the discussion of the old man.
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| CFCs from old and damaged refrigerators and old aerosol cans gradually found their way into the upper atmosphere where the they damaged the ozone layer. | |
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| The ozone layer protects the Earth from harmful radiation. As a result of the damage a hole began to appear in the ozone layer over the South Pole each summer, getting bigger each year. | |
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| As a result the hole in the ozone layer has been reducing in size in recent years. | |
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