Thank you.
I would certainly suggest that the dirty dozen are the worst of the worst by certain measures, which I don't have the background to go into and say why they qualify and others don't. But certainly on the long-range transport, among other characteristics, they exhibit those.
I would simply point out the tonnes of emissions of pollutants that are emitted, which are accessible on pollutionwatch.org, and even more importantly, or in addition to that, the thousands of chemicals in circulation that have been through the categorization process, 23,000 or so. But roughly 50,000 other substances have not been categorized, have not been assessed, and are acting synthetically in the environment and in our bodies.
For those numbers, understandably perhaps, some of them are perhaps coming down, but their effects are still occurring. In fact, in many cases, as we know with dioxins and many other substances, only the very smallest quantities have hazardous effects, until we get to zero on some of those substances.