CFCs and the Ozone LayerBerkeley Electronic Press Selected WorksJ M StarlingJudy A Raper
To answer the question regarding why chlorofluorocarbons (CFCs) are believed to be associated with cancer, we can analyze the provided options step by step.1. Understanding CFCs: Chlorofluorocarbons (CFCs) are chemical compound
The stratospheric ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation from the sun. The emission of ozone depleting substances has been damaging the ozone layer. But through domestic and international action, the ozone layer is healing and should ful...
Theozone (O3) layerin the stratosphere protects life on earth by filtering out harmful ultraviolet radiation (UV) from the sun. When chlorofluorocarbons (CFCs) and otherozone-degrading chemicalsare emitted, they mix with the atmosphere and eventually rise to the stratosphere. There, the chlorine an...
HCFCs are less damaging substitutes for CFCs, which do the most harm to the ozone layer, and their use is growing fast now that CFCs are banned in rich countries. The ozone treaty’s scientific panel says that if rich countries banned HCFCs by the year 2000, 4.6 per cent less ozone wo...
CFCs are chemicals known to destroy the ozone layer. WordReference English-ChineseDictionary © 2025: 复合形式: 英语中文 ozone hole, hole in the ozone layern(caused by pollution)SCSimplified Chinese臭氧层空洞 Collins Chinese Dictionary Plus (3rd edition), 2011: ...
What are the holes in the ozone layer mainly caused by? 本题考查特殊疑问句。原句对臭氧层空洞形成的原因进行提问,且对 “物” 提问,我们通常使用特殊疑问词 “what”。原句中有 be 动词 “are”,在特殊疑问句中,将“are” 提到主语 “the holes in the ozone layer” 之前。因此答案为 What are the...
1997 by the US Environmental Protection Agency as an acceptable substitute for ozone-depleting substances such as CFCs. The chemical was known to be a potential ozone-eater, but it survives in the environment for less than a fortnight, so regulators assumed it could not reach the ozone layer....
ozone layer has been damaged by substances known as chlorofluorocarbons (CFCs) which were used in a variety of products such as insulating foam, solvents, and refrigerants. The molecules in CFCs destroy ozone molecules at a rate of 1:100,000 which make them very dangerous to the ozone layer....
Scientists recently discovered that China has been using and emitting ozone-destroying gases. Chlorofluorocarbons, or CFCs, a frightfully long-lasting chemical mostly coming from aerosol sprays and refrigeration devices are proven to destroy the ozone layer, had been mysteriously increasing....