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.
State Capital-Harrisburg. Largest City-Philadelphia. Area - 46,058 square miles [Pennsylvania is the 33rd biggest state in the USA]. Population - 12,773,801 (as of 2013) [Pennsylvania is the sixth most populous state in the USA, after California, New York, Texas, Florida and Illinois ].