What is global warming ?

Global Warming is the increase in Earth's mean surface temperature because of the effect of greenhouse gases. These gases absorb long wave radiations and warm the atmosphere, and this process is called as Greenhouse effect.

Global warming is actually the adverse affect of growing pollution. Due to phenomenal increment in pollution , the harmful sun rays enter the globe but fail to reflect back and escape. This is because the pollution forms a layer on the outskirts of earth's atmosphere. Thus it leads to escalation of warming of the globe.