"Global Warming is Our Concern"

Generally, global warming is a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants. It is something that give us bad effect.  It makes our earth in dangerous condition. This can happen because of some factors, such as human activity and nature. Human activity that can make the effect of global warming increase and also the natural activity that can make it worse.