The Disaster of Deforestation , 2003 . Even a slight change in overall atmospheric temperature can have very serious effects . In 1990 , 35 of the world 's carbon emissions resulted from tropical deforestation . Deforestation also causes increases in atmospheric methane and nitrous oxide . 38-42 of the global atmospheric amount of methane indirectly results from deforestation , mainly because of cattle ranchers and rice farms that replace tropical rainforests . Also , 25-30 of the world 's nitrous oxide indirectly results from deforestation , particularly from fertilized...











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