Yes. There are two primary aspects that are being analyzed to address sustainability. One is the life-cycle carbon intensity. All fuels are compared across their full life cycle. Whether you're pumping oil out of the ground or growing crops or using forest residues, the systems are assessed from production all the way through to end use and then compared. That's given the metrics of all the energy and emissions related to the process.
Regarding sustainability, on the forestry side, we have forest certification standards, where Canada is a leader. I believe you heard from FPAC on that. We've done very well. Our agricultural systems are also very sustainable. They're not as advanced as certification systems. I believe you heard from the round table for sustainable crops. They can articulate the status of their work.
On biofuels, quite often we see measures like renewable biomass defined, so that we eliminate the use of high-risk biofuels. We're not cutting down rainforests. We're not harming peat-based lands. We're not filling in wetlands with high conservation value and things like that and expanding the use of agriculture into those areas.
Particular to Canada, our total agricultural land is in a slight decline. Over time, what we've been able to do with precision agriculture and better agronomics, like low-till and zero-till farming, is produce more from the same land base. That more goes into food, animal feed and industrial products, as well as energy products. Our systems are well measured and able to meet a certain amount of growth, in order to supply these low-carbon needs.