This rate used to be larger, but recent medical advancement has placed the rate at a lower level than in previous years. The following questions refer to the diagram below. Each area represents the range of a particular endangered species. The squares represent human settlements. The center oval in each represents a reserve that the government of each area has separated no human activity is allowed within the oval, except in instances where the road is used by vehicles.
Lines represent roads.
Shaded areas represent areas that have been set aside for scientific research. No Diagram Available. The only disturbances in ecosystems are caused by man. We should always use the logistic curve to manage renewable resources.