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What are the causes of ozone depletion?
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The main cause of ozone depletion is the release of chlorofluorocarbons (CFCs) into the atmosphere. These chemicals were used in refrigerators, air conditioners and other appliances until they were banned in 1987 due to their harmful effects on the ozone layer. Ozone depletion also occurs naturally, but at a much slower rate than human-caused ozone destruction.