Development of greenhouse gases in the atmosphere over millions of years. The effect happens because of certain naturally occurring substances in the atmosphere.
Indicate how the original gases, like carbon dioxide and methane, were produced by volcanic activity, as the Earth cooled.
Discuss how carbon dioxide is a colorless gas that is a bi-product of the combustion of organic matter.
The original percentage of gases in the atmosphere made up less than 0.04%, but today, human activities are pumping huge amounts of carbon dioxide into the atmosphere.
These increased concentrations are considered the primary factor in global warming, because carbon dioxide absorbs infrared radiation. Most of the enery that escapes Earth's atmosphere comes in this form, so extra carbon dioxide means more energy absorption and in overall increase in he planets temperature.
Discuss the actual tonnage rise in carbon dioxide since 1900 and the corresponding temperature increase.