Global Warming - Essay Example

Download file to see previous pages Policy adoption and implementation can help contain manmade global warming.
Climate change is caused by the forces of nature. Man has little or no influence on natural climate change, and they occur from time to time as the world readjusts to the forces. Leading causes of natural climate change include volcanicity and change in the energy of the sun reaching the earth. When volcanicity occurs, magma, ash, and other toxic gases are thrown into the atmosphere. The temperature rises to extreme levels due to the sweltering magma being ejected. The volcanic activities produce highly lethal gases such as Sulphur and methane. These gases become trapped in the air thus increase the temperature of the earth. The ash clouds the air and catches lots of heat. The volcanic ash and gases reflect back the sun’s rays trapping much temperature that causes global warming (Victor, 2011).
Another cause of natural climate change is the change in the intensity of the sun reaching the earth. During the ice age, the sun was very instrumental in converting the mass of solid water into liquid water. The sun’s rays were weak, and water froze to ice. When the sunshine level increased, the earth became hotter, and more water liquefied, the liquid water collects to form lakes and oceans thus the land that had been buried resurfaced.
Man’s activities that contribute to change in the climate include the release of greenhouse gases and clearing of vegetation such as trees. Plants play an enormous role in maintaining the worlds temperature. Plants use the carbon dioxide in the air and convert it into stored energy. When plant absorbs carbon dioxide, they release oxygen. The oxygen the combines with hydrogen to form water that precipitates as rain. Cutting down plants destabilizes the balance by increasing the level of carbon dioxide. The excess carbon dioxide becomes trapped in the air. Trapped carbon dioxide creates an insulation for ...Download file to see next pagesRead More