 Well, thinking about that, what the elements of a restored ecosystem might look like, starting with trees and plants, can you tell us where most of the trees in our cities and the plants in our gardens come from? They come from someplace else. It's another continent. So it depends on where you live. In the northern areas, it's almost always Asia. Some from Europe. Down in Florida, along the Gulf Coast, an awful lot of plants are from South America.