greenhouse gases

greenhouse gases
Carbon emissions tending to increase the proportion of carbon dioxide (CO2) in the earth's atmosphere. This is believed to have a greenhouse effect, decreasing radiation of heat from the earth and causing temperatures to rise. This could cause climatic changes, and raise the sea-level by melting part of the polar icecaps. It has been suggested that this could be prevented by introducing carbon taxes to decrease emissions of carbon dioxide, and by halting deforestation in tropical areas and promoting reforestation of temperate areas of the world, since trees act as a sink for CO2.