The challenge of course becomes that of regionality. If I were to provide a generalization, it might be true for one region but not for another.
When I think very broadly in terms of some of the work we've done in the west, certainly we have stored a lot of carbon here through mechanisms like conservation tillage. If I look south of the border to the U.S. at our comparators for the northern Great Plains, there is quite a bit of conservation tillage in parts of the more semi-arid Great Plains. If you go further south and east into some of the corn country and beyond, it gets to be much more straight ahead with intensive tillage and high fertilizer use, and there would still be a lot of greenhouse gases being emitted in those very intensive production systems. There is a lot of risk associated with those.
Again, Brazil is probably comparable to Canada in a lot of ways in terms of the mix of systems there. One of the challenges that you would see in parts of Brazil is where there is continued deforestation. There is going to continue to be a lot of carbon emitted in association with that as more and more land is cleared. That represents one of the biggest periods of carbon loss associated with the system.