â¢Habitat Degradation â decline in habitat quality, affects many but not. all species, may be temporary; Primary cause of species extinction. globally and in most countries. â¢Habitat Loss â habitat changed in way that usually adversely affects. most or all species, effects longer term.
Waltham (/ËwÉËlËÎ¸Ã¦m/) is a city in Middlesex County, Massachusetts, United States, and was an early center for the labor movement as well as a major contributor to the American Industrial Revolution.
Lawrence, Massachusetts. Lawrence is a city in Essex County, Massachusetts, United States, on the Merrimack River. As of the 2010 census, the city had a population of 76,377,[2] which had risen to an estimated 78,197 as of 2014.[3] Surrounding communities include Methuen to the north, Andover to the southwest, and North Andover to the southeast.