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Carbon dioxide - Wikipedia
Carbon dioxide (chemical formula CO 2) is a colorless gas with a density about 60% higher than that of dry air. Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas.The current concentration is about 0.04% (410 ppm) by volume, having risen from pre-industrial levels of 280 ppm.
Carbon Dioxide Information Analysis Center (CDIAC)
Carbon Dioxide Information Analysis Center ESS-DIVE CDIAC Data Transition . The CDIAC data archive ceases operation at the end of September 2017.
Carbon Dioxide | Vital Signs – Climate Change: Vital Signs ...
Carbon dioxide (CO 2) is an important heat-trapping (greenhouse) gas, which is released through human activities such as deforestation and burning fossil fuels, as well as natural processes such as respiration and volcanic eruptions. The first graph shows atmospheric CO 2 levels measured at Mauna ...
Overview of Greenhouse Gases | Greenhouse Gas (GHG ...
Carbon dioxide (CO 2) is the primary greenhouse gas emitted through human activities.In 2016, CO 2 accounted for about 81.6% of all U.S. greenhouse gas emissions from human activities. Carbon dioxide is naturally present in the atmosphere as part of the Earth's carbon cycle (the natural circulation of carbon among the atmosphere, oceans, soil, plants, and animals).
Dry ice - Wikipedia
Dry ice is the solid form of carbon dioxide (CO 2), a molecule consisting of a single carbon atom bonded to two oxygen atoms.Dry ice is colorless, non-flammable, with a sour zesty odor, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H 2 CO 3).
Home | Scripps CO2 Program
Carbon Dioxide Measurements. This site provides access to products from the Scripps CO 2 Program and serves as a tribute to its founder Charles David Keeling
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This page is being updated | US EPA
This page is being updated. Thank you for your interest in this topic. We are currently updating our website to reflect EPA's priorities under the leadership of President Trump and Administrator Pruitt.