MASTER LEAARNING

Master Learning



Question No 1:

Global Warming

The term global warming defined as the climate change due to human actions. So, all the climate changes that are caused by human actions referred to global warming. It is a phenomenon of the rise in average temperature at the earth's surface (air and oceans) that began decades ago and is ongoing. Global warming would have many consequences including increased sea levels, greater frequency of extreme weather events (cyclones, coastal flooding, etc.) and changes in rainfall patterns. Other expected effects are a change in agricultural yields, glacial retreat, and the disappearance of many species and increased the scope of some disease vectors.

Global warming refers to a statistically significant change in the mean state of the climate or in its variability, persisting for a longer or shorter period of time (typically decades or longer). Global warming may be due to natural internal processes or external, or to persistent anthropogenic changes in atmospheric composition or land use. Global Warming is a unique problem, global and long term, given the complex interactions.

(Karnaukhov, 2001, pp. 42-48)

Climate Change

An increase in frequency and intensity of climate-induced natural disasters (droughts, floods, storms, cyclones) is known as climate change. While climate change is not synonymous with warming global, as it responds to various causes and results in many consequences, is found commonly associated with this phenomenon of increasing the average temperature in the atmosphere and oceans. But in addition to warming, climate change also affects precipitation, cloudiness, and many other parameters.

The different theories about this phenomenon account for solar variations, orbital, meteorite impact, continental drift, atmospheric composition, ocean currents, Earth's magnetic field and anthropogenic (or man-made) as factors influencing climate change. In turn, a group of theories suggests that at this stage, the planet Earth could respond by enhancing the effects and recovering natural balance. (Frank, et. al, 2006, pp. 112-126)

Scientific Evidence

At present, it is a scientific fact that global climate is being altered significantly (Global Climate Change). In this century, climate change as a result of increased concentrations of greenhouse gases such as carbon dioxide, methane, nitrous oxide and chlorofluorocarbons. These gases are trapping an increasing proportion of terrestrial infrared radiation, and it is expected that global temperature will increase between 1.5 and 4.5°C (so-called Greenhouse Effect and Global Warming) in upcoming years. Although there is general agreement on these findings which stated that there is great ...