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.
1 NH 111A begins at a junction with NH 128 just north of the Massachusetts border, going primarily northeast, exiting the town into Windham. It is known as Marsh Road and Windham Road within Pelham.  NH 128 is part of the larger Mammoth Road which connects Lowell, Massachusetts to Hooksett, New Hampshire.