Human beings have dramatically increased the levels of greenhouse gases in the atmosphere by burning vast amounts of wood, coal, and oil - increasing carbon dioxide concentrations by 30% and methane levels by 145% since the onset of the Industrial Revolution.
(Human beings; have dramatically increased; the levels of greenhouse gases; by burning vast amounts of wood, coal, and oil - increasing carbon dioxide concentrations by 30% and methane levels by 145% since the onset of the Industrial Revolution)
Human beings
have dramatically increased
the levels of greenhouse gases by burning vast amounts of wood, coal, and oil - increasing carbon dioxide concentrations by 30% and methane levels by 145% since the onset of the Industrial Revolution