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To a lesser extent, the clearing of land for agriculture, industry, and other human activities have increased the concentrations of other greenhouse gases like methane (CH4), and further increased (CO2).
The gases that contribute to the greenhouse effect include water vapor, carbon dioxide (CO2), methane, nitrous oxides, and chlorofluorocarbons (CFCs).
On Earth, human activities are changing the natural greenhouse.
Every time fossil fuels are burned, more carbon dioxide is released into the air. â€œMethane absorbs infrared radiation 25 times more effectively than carbon dioxide, making it an important greenhouse gas despite its relatively low concentrationâ€ (Murck, Skinner, and Porter 490).
Car exhaust emissions also increase the amount of carbon dioxide in the air, and more carbon dioxide means more heat rays being absorbed. Many studies have been performed on how methane is released into the atmosphere.
Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric CO.
This happens because the coal or oil burning process combines carbon (C) with oxygen (O2) in the air to make CO2.More gases in the atmosphere means the earth will start to get warmer, and the result is global warming.On the other hand, if there was no greenhouse effect, the earth would be too cold for humans to comfortably exist.If a 10-degree warming was the factor that ended the last ice age, imagine what another warming could do. Warm air holds more water vapor than cold air, so there is an increase in evaporation in dry areas, and hence more drought – something that has been documented on every continent.Once that water is in the atmosphere, it’s going to come down somewhere – and, indeed, we have seen the most dramatic flooding ever recorded in recent years.- A stronger greenhouse effect will probably warm the oceans and partially melt glaciers and other ice, increasing sea level.Ocean water also will expand if it warms, contributing to further sea level rise.Results have shown that methane is â€œgenerated by biological activity related to rice cultivation, leaks in domestic and industrial gas lines, and the digestive process of domestic livestock, especially cattleâ€ (Murck, Skinner, and Porter 490).The Environmental Media Services Organization has found that the greenhouse effect â€œcould drive temperatures up as much as 6 degrees by the year 2100 – an increase in heat comparable to the 10 degree warming that ended the last ice ageâ€ (Fast Facts).- Meanwhile, some crops and other plants may respond favorably to increased atmospheric CO2, growing more vigorously and using water more efficiently.At the same time, higher temperatures and shifting climate patterns may change the areas where crops grow best and affect the makeup of natural plant communities.