单词	carbon dioxide
释义	carbon dioxide noun : a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages Example Sentences Recent Examples on the Web All of these factors influence the amount of carbon dioxide in the atmosphere—MOXIE’s main snack. Marina Koren, The Atlantic, 12 Sep. 2022 Each ton of carbon dioxide that exits a smokestack or tailpipe is doing far more damage than what governments take into account, researchers conclude in a scientific paper published Thursday. CBS News, 1 Sep. 2022 The telescope has already shared the first spectrum of an exoplanet by detecting a water signature in its atmosphere and found the first clear evidence of carbon dioxide in an exoplanet’s atmosphere. Ashley Strickland, CNN, 1 Sep. 2022 Those are 10 tons of carbon dioxide cut off in the e-motorcycle life cycle. Faustine Ngila, Quartz, 31 Aug. 2022 Nuclear power produces close to zero emissions of carbon dioxide, the main gas that scientists say is causing the Earth to warm. Matthew Dalton, WSJ, 28 Aug. 2022 The project would increase greenhouse gas emissions by the equivalent of 3.47 million metric tons of carbon dioxide annually for the next three decades, according to the Monday filing. Hal Bernton, Anchorage Daily News, 23 Aug. 2022 Scientists estimate that about 3 billion metric tons of carbon dioxide are encased in California’s forests, shrubs, grasses and other vegetation. Tony Briscoestaff Writer, Los Angeles Times, 29 Aug. 2022 Researchers announced last week that the James Webb Space Telescope has captured the first definitive evidence of carbon dioxide in the atmosphere of a planet outside of our solar system. Will Sullivan, Smithsonian Magazine, 29 Aug. 2022 See More Word History First Known Use 1867, in the meaning defined above Kids Definition carbon dioxide noun carbon di·​ox·​ide -dī-ˈäk-ˌsīd : a heavy colorless gas that is formed by burning fuels, by the breakdown or burning of animal and plant matter, and by the act of breathing and that is absorbed from the air by plants in photosynthesis Medical Definition carbon dioxide noun : a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages
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