There are several reasons why the temperature on the Earth has become more intense these days. The main cause is due to human activities such as building factories, driving more cars, and increasing number of airplanes. Since these activities make a significant contribution to releasing carbon footprint. For example, human burns fossil fuel to create energy, leading to the rise of greenhouse gases. Another factor is related to the act of cutting down trees in excess and damaging the natural habitats of wildlife. The atmospheric content of CO2 also depends on deforestation because trees are a huge reservoir to reduce carbon emissions.