highly specialized species tend to evolve on islands because of the environmental conditions and resource availability. based on the theory of island biogeography, which of the following would most likely experience the greatest decline of specialist species if an invasive species emigrated from the mainland? responses a small island a far distance from the mainland a small island a far distance from the mainland a small island in close proximity to the mainland a small island in close proximity to the mainland a large island a far distance from the mainland a large island a far distance from the mainland a large island in close proximity to the mainland