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.
The data for Middlesex county, MA may also contain data for the following areas: Melrose, Harvard Square, East Arlington, Acton, Shirley, Lexington, Reading, Newton, Nutting Lake, Concord, West Somerville, Dracut, Newtonville, West Newton, North Waltham, Winchester, South Chelmsford, East Pepperell, Cambridge, Pinehurst, East Cambridge, Natick, South Waltham, Waban, Watertown, Maynard, Wilmington, Auburndale, Groton, Chestnut Hill, Chelmsford, Arlington, Lowell, Marlborough, Pepperell ...