Literacies for learning Essay Example | Topics and Well Written Essays - 2000 words

Literacies for learning - Essay Example 8. Ward, D., 2007, Volcanoes Influence Climate, 7th June 2007, Accessed on 27th August 2009, Retrieved from http://www.windows.ucar.edu/tour/link=/earth/climate/geosphere_volcanoes_influence_on_climate.html It was back in 1783, that Benjamin Franklin first developed a relationship between the volcanos and the global climate. He had observed a vast change and abnormal chill that had come into the summers and also the other changes like the freezing of the ground, snow not melting and also severe winters and constant fog. Post this there have been several researches that have been carried out to check for the effects of volcanos on the global climate. I support the fact that volcanos do in fact affect the world climate. There are several reasons why the large volcanic eruptions have high effects on the global climate. Firstly, it has been noted that the levels of carbon – di – oxide that is emitted has a strong ‘greenhouse effect’. This effects the heat radiation and forms a type of insulation around the planet. The green house is an essential part of the planet as it allows the survival by maintaining the temperatures of the planet. The level of CO2 that is emitted in the atmosphere by humans is very high and the volcanos add to this level of pollution. Secondly, the ash and the aerosol clouds of the large volcanic eruptions spread through the atmosphere. One of the best examples for this is the case where the Krakatau volcano erupted in the Indonesian Islands and this spread to South Africa by the next day and across the Globe within a week. The other effects that have been faced is the global warming, and the high levels of sulphur – di –oxide that is produced by the volcanos also leads to further cooling of the temperatures across the world. Thus this exposition highlights that there are several effects of volcanos on the global temperatures and the