| 相关关键词：ozone layer , over the Arctic , in the , The Arctic , ozone hole , Ozone Layer |
| 相关概念： |
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| An Unusually Large Hole Has Opened in The Ozone Layer Over The Arctic ＠ 2020-04-09T20: |
| Over the last month, a new hole in the ozone layer has started to form over the Arctic. |
| 关键词：ozone layer over the Arctic in the The Arctic ozone hole Ozone Layer |
| 概念： |
| Historic ban on hairsprays helps ozone layer to heal ＠ 2020-03-29T16: |
| Weather changes from the use of harmful gases in the 1960s have started to go back to normal after the ban. |
| 关键词：ozone layer |
| 概念： |
| The ozone layer is healing, new study finds ＠ 2020-03-27T20: |
| The ozone layer is continuing to heal and has the potential to fully recover, according to a new study. A scientific paper, published in Nature, heralds a rare ... |
| 关键词：Ozone Layer ozone layer |
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