Loss of habitat is the single greatest threat to any species. If an island on which an endemic organism lives becomes uninhabitable for some reason, the species will become extinct. Any type of habitat surrounded by a different habitat is in a similar situation to an island.
Waltham, MA. Waltham is a city in Middlesex County, Massachusetts, United States, was an early center for the labor movement, and major contributor to the American Industrial Revolution.
Stratham, New Hampshire. Stratham is a town in Rockingham County, New Hampshire, United States. The town had a population of 7,255 at the 2010 census, and an estimated population of 7,280 in 2013. It is bounded on the west by the Squamscott River.