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.
Stoneham is a town in Middlesex County, Massachusetts. Its population was 21,437 at the 2010 census, down from 22,219 in 2000. The town is the birthplace of Olympic figure skating medalist Nancy Kerrigan and is the home of the Stone Zoo. The earliest documented mention of the territory now called Stoneham dates to the year 1632, when on February 7 Governor Winthrop and his party came upon this area. They found Spot Pond and ate their lunch on a place they called Cheese Rock, now known as Bear Hill.