Thank you for the question. It's a pleasure to be here to respond.
That definition is currently a part of the Canadian Polar Commission Act in terms of a definition for the Arctic. That definition has been carried through for quite some time. It's an acknowledgement, or it tries to be an acknowledgement, that the north has many different geographical differentiation characteristics. The tree line is a well recognized component in terms of that. Your comments with respect to the changing nature of that are legitimate. As a result we were trying to carry forward with the original definitions as best we could through the CPC legislation and recognizing that in terms of the scope and mandate of this particular institution.