Throughout much of the developing world however, forests are often not well managed and are threatened by agricultural expansion, commercial logging, forest fires and overgrazing. As well as the extinction of wildlife species, the loss of a forest an also lead to soil erosion. Such mismanagement, in the extreme, can lead to deforestation and the loss of an important natural resource. Trees utilise carbon dioxide during photosynthesis and can help "soak up" some of the excess carbon dioxide released into the atmosphere by mankind, that is causing global warming.