Sure.
I think there's no question that agriculture in Canada is quite sustainable. Canada has been tracking a number of sustainability metrics related to agriculture since the 1980s, and every five years Agriculture and Agri-Food Canada puts out a comprehensive report on the environmental performance. You can't find a report of that quality anywhere else in the world.
One of the things that has happened is that we've seen increasing yields of crops, particularly those that are used for biofuels. At the same time, we see stagnant or declining demand for some of these crops from some other traditional uses, so the feed going into livestock is lower today than it was 10 or 15 years ago.