Oil refining and fuels
Carbon dioxide from burning fuels causes global warming, a process capable of changing the world’s climate significantly.
As you can see from the graphs, the amount of carbon dioxide in the atmosphere has increased steadily over the past 150 years, and so has the average global temperature. Some of this is due to human activity.
Along with other gases such as methane and water vapour, carbon dioxide is a greenhouse gas. It absorbs heat energy and prevents it escaping from the Earth’s surface into space. The greater the amount of carbon dioxide in the atmosphere, the more heat energy is absorbed and the hotter the Earth becomes.
A rise of just a few degrees in world temperatures will have a dramatic impact on the climate:
Scientists are trying to control the amount of carbon dioxide in the atmosphere by:
However, some scientists do not believe that the global temperature increase and the carbon dioxide increase are caused by human activities.
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