There are about 15,000 species in this phylum. The phylum includes earthworms, leeches, and marine worms known as polychaetes. Species in this phylum have metameric bodies. Metameric bodies are divided into segments called annuli. The annuli are covered in tiny hairs called setae. Setae help the worms move.
Philadelphia (/ËfÉªlÉËdÉlfi.É/) is the largest city in the Commonwealth of Pennsylvania and the fifth-most populous city in the United States, with an estimated population of 1,567,442 and more than 6 million in the seventh-largest metropolitan statistical area, as of 2015.
The Province of Pennsylvania, also known as the Pennsylvania Colony, was founded in English North America by William Penn on March 4, 1681 as dictated in a royal charter granted by King Charles II.he name Pennsylvania, which translates roughly as Penn's Woods, was created by combining the Penn surname (in honor of William's father, Admiral Sir William Penn) with the Latin word sylvania, meaning forest land..