The cause of global warming.
global warming (Global Warming) is caused by an increase in world temperatures, atmosphere, covered the gas within the world. As a result, the changes of the world and increased gas, mainly caused by the burning of fossil fuel.
Global warming (Global Warming) is caused by an increase of the gas covered the atmosphere of the Earth. Keep temperatures within the world. As a result, the season the world changes, and increased gas mostly caused by fossil fuel combustion.