Of course, the definition of biodiversity still hasn't been settled because we get into questions of the number of species and of native species versus invasives. Some invasives are actually good. We use the term glibly, but it still isn't that well defined.
Mr. Penner, I have a quick question for you.
Last week, one of our witnesses talked about nature deficit disorder among kids and made a very strong distinction between the behaviour of children who are playing in natural play spaces with trees, rocks, grass, and all that as opposed to these plastic and metal artificial play structures. Can you comment on the difference in how children react to those two types of play structures?