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 was one of the two major restoration colonies, the other being the Province of Carolina. The proprietary colony 's charter remained in the hands of the Penn family until the American Revolution, when the Commonwealth of Pennsylvania was created and became one of the original thirteen states.