"Global Warming is Real"

Global warming is the big problem in this world. Before we continue, let me explain the meaning of global warming. From dictionary, 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, CFC, and other pollutants. The whole definition is Temperatures are rising because we have dramatically increased the amount of carbon dioxide in the Earth's atmosphere, by burning fossil fuels such as coal, gas, and oil, and by clearing forests.