Like most things, it is not always black and white: Agriculture, Forestry, and Other Land Use (24% of 2010 global greenhouse gas emissions): Greenhouse gas emi

Like most things, it is not always black and white: Agriculture, Forestry, and Other Land Use (24% of 2010 global greenhouse gas emissions): Greenhouse gas emissions from this sector come mostly from agriculture (cultivation of crops and livestock) and deforestation. This estimate does not include the CO2 that ecosystems remove from the atmosphere by sequestering carbon in biomass, dead organic matter, and soils, which offset approximately 20% of emissions from this sector.[2] Note these are Global stats, while my link is US only, and was focused on CO2. edit: and it doesn't seem that any of these statistics contradict each other, but it all depends on if we are talking about global stats, US only stats, all GHG emissions, or just CO2.