what is global warming

 what is global warming


Gases created through human industrial and agricultural practices (primarily carbon dioxide from burning fossil fuels and wood, as well as methane, nitrous oxide, and chlorofluorocarbons) increase the heat-reflecting potential of the atmosphere, thereby raising the planet's average temperature.

The increase in global temperatures brought about by the increased emission of greenhouse gases into the atmosphere. There is no doubt that concentrations of, for example, atmospheric carbon dioxide have risen since the 1950s; what is less certain is the extent to which this has altered the earth's climates, or the extent to which climates will change in the future.