A small island has the highest rate of extinction.
<u>Explanation:</u>
An island that is small in size would naturally be home to less population of living forms.
This population can migrate from that island to another. Once there is a mass migration of the population, the island becomes highly vulnerable to extinction.
Even a slight rise in the level of the water body that the island is on would result in the submergence of a small island under the water.
