if land userelated emissions are included however the picture changes dramatically giving it of global emissions and making brazil the fourthlargest emitter after china the united states and the eu the per capita figure increases to tonnes per year this reflects the fact that agriculture and forestry play a major role in the brazilian economy with deforestation responsible for over half the countrys current greenhouse gas emissions and the fact that biofuels constitute a substantial part of its energy mix according to mckinsey the opportunities from land use put brazil among the five countries with the greatest potential to reduce emissions by and at a comparatively low cost nonetheless the brazilian economy is projected to grow considerably and the possibility of increased emission intensities raises questions about the future trajectory of brazilian emissions