Having conducted an audit at the provincial level in my previous work as well, I can speak to that in part.
It's a whole-of-society issue to address climate change, as is the related biodiversity crisis. Those are whole-of-society crises that need to be addressed. It's not only all levels of government but also individuals in the private sector who all have to do their part in addressing these if we're actually going to succeed in not just hitting a target, which is important, but more importantly averting the worst effects of climate change and biodiversity loss.
Provinces can do a lot in both the climate area and the biodiversity area, given the division of powers under the Constitution, and local municipalities can play a part as well.
On issues of international or national concern such as the climate crisis and the biodiversity crisis, it's incumbent on the federal government to take the lead. There's no doubt about that.