From soil erosion and depletion of water resources to oceanic «dead zones» associated with synthetic fertilizer run - off and generation of major greenhouse gas emissions. (foe.org)
Aside from water vapor, which has a residence time of about nine days, [29] major greenhouse gases are well mixed and take many years to leave the atmosphere. (en.wikipedia.org)
Brussels, 27 September 2007 - Friends of the Earth Europe has warned that US President George Bush aims to undermine the ongoing UN climate negotiations by hosting a meeting of major greenhouse gas emitters in Washington today and tomorrow. (foeeurope.org)