Causes of climate changes
Earth is surrounded by a layer of gases that retains some of the solar energy and heats the planet. The problem is “the enhanced” greenhouse effect. The emission of all the greenhouse gases made the membrane around the globe so thick that a much large portion of the sun’s thermal energy remains and is heating up the earth at an unnatural rate. The most important cause of the increased greenhouse effect is the emission of carbon dioxide from the combustion of fossil fuel, coal, oil and natural gas. Since this carbon is not included in the short-term natural ecocycle, it consequently increases the carbon dioxide content in the atmosphere.
Consequences of the greenhouse effect include the rising of the sea level, the melting of the polar ice caps, displacement of current climate zones and a change in precipitation.
Combustion of biofuel (for example wood or biogas) also produces carbon dioxide, but that carbon dioxide would be absorbed from the atmosphere as the biofuel was growing, and would nevertheless have been released if the biofuel had decomposed. This ecocycle means that the combustion of biofuel does not produce any net contribution of carbon dioxide to the atmosphere.