Thanks, Mr. Graham.
I just want to get in another quick question with you as well.
This is the first day of our study, and we have been focused a lot on emissions, but I also want to talk about water quality, because that's also an important part of this study.
What can you tell us about the efforts you've made with respect to water quality. We know that runoff, in the past, has been pretty devastating to aquatic bodies of water, and there are major efforts to clean up some of our major lakes within Canada. Those water bodies can suffer from eutrophication, excessive algae growth.
Can you tell us anything about the trend lines over the last number of decades? I know that the 4Rs play a big part of that, but is there anything else you can tell us on that in the next minute?