global warming
US /ˌɡloʊ.bəl ˈwɔːr.mɪŋ/
UK /ˌɡloʊ.bəl ˈwɔːr.mɪŋ/
1.
a gradual increase in the overall temperature of the earth's atmosphere attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.
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The scientific consensus is that human activities are the primary cause of global warming.
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Addressing global warming requires international cooperation and significant policy changes.