What Causes Global Warming?
Scientists have looked at the natural cycles and events that are known to influence climate and the only way to explain the pattern is to include the effect of greenhouse gases (GHGs) emitted by humans.
There are several greenhouse gases responsible for warming. The humans emit them in a variety of ways; fossil fuel form cars, factories and electricity product. Carbon dioxide, Methane from landfill and agriculture and nitrous oxide from fertilizers, refrigeration and industrial process.
Different greenhouse gases have very different heat-trapping abilities. Some can trap more heat than CO2. A molecule of methane produces more than 20 times the warming of a molecule of CO2. Nitrous oxide is 300 times more power than CO2. Chlorofluorocarbons is thousands of times greater than CO2. None of the gases can add as much warmth to the atmosphere as CO does.