A collection of geographical regions. Each instance of ecological region is a region having one or more characteristic ecosystems. From knowledge of those ecosystems, we can posit whether certain organisms can forage, reproduce, and live successfully there. Information about ecological regions typically also includes what kinds of organisms are in fact found there. In theory, any arbitrary continuous region could be analyzed as an ecological region, but most regions identified in practice have some kind of sameness or systematic interconnection in their topology, climate, and biology. Examples: the Western Desert Of Egypt, the the Great Barrier Reef, the the Amazon.