One answer, found in other groups than this one, is to circulate carrier fluid to bring things in to and away from the cells of the interior; flatworms use a simpler but more limiting response. Because a flatworm is flat, even its innermost cells are close to a surface.
Framingham, Massachusetts. Framingham /ËfreÉªmÉªÅËhÃ¦m/ ( listen) is a town in the Commonwealth of Massachusetts in the United States. Incorporated in 1700, it is located within Middlesex County and the MetroWest subregion of the Greater Boston metropolitan area.
Needham is a town in Norfolk County, Massachusetts, United States. A suburb of Boston, its population was 28,886 at the 2010 census. Needham was first settled in 1680 with the purchase of a tract of land measuring 4 miles (6.4 km) by 5 miles (8.0 km) from Chief Nehoiden for the sum of 10 pounds, 40 acres (160,000 m2) of land, and 40 shillings worth of corn.