Flatworms also have a feature that the sponges and cnidarians do not, a middle layer of actual organized cells. Flatworms have three cell layers: an ectoderm, an outer covering like the other groups have; an endoderm, a lining of the digestive spaces somewhat like a cnidarians; and a mesoderm between the other two. With actual tissues protected like this, another evolutionary explosion of features happened.
Buying a home in Fredericktown, PA. Fredericktown is a city in Washington County, Pennsylvania. Last year, 2 properties were sold for a median price of $49,000. Average price for a home in Fredericktown, PA is $49,000. The average property tax is $1,186 per year.
Fredericktown is a rural community, home to 393 people. 1  area. Rural. 2  weather. 83.6Âº. 3  Commuting method. 87.3 4 %. Commuting time. 29 min. to work.  top industries. 1  Construction. airport. 25 miles.