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Greenhouse gases hit new high Greenhouse gases in the atmosphere hit a new record in 18, exceeding the average yearly increase of the last decade and reinforcingGreenhouse gases (carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), chlorofluorocarbons (CFCs), and carbon tetrachloride (CCI4) continue to increase because of human activities While the growth rates of most of these gases have been steady or increasing over the past decade, that of CH4 and some of the halocarbons has been decreasing The rateMain Greenhouse Gases Multiple gases contribute to the greenhouse effect that sets Earth's temperature over geologic time Small changes in the atmospheric concentration of these gases can lead to changes in temperature that make the difference between ice ages when mastodons roamed the Earth, and the sweltering heat in which the dinosaurs lived Nitrogen Pollution Cause Effect In India Current Status Diademy Greenhouse gases list upsc