1 The population density in Parkersburg is 3367% higher than West Virginia. 2  The median age in Parkersburg is 1% higher than West Virginia. 3  In Parkersburg 95.35% of the population is Caucasian. 4  In Parkersburg 1.77% of the population is African American.  In Parkersburg 0.47% of the population is Asian.
The Polychaeta or polychaetes are a paraphyletic class of annelid worms, generally marine. Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. Indeed, polychaetes are sometimes referred to as bristle worms.
Annelids have three body regions (Fig. 2). The majority of the body is comprised of repeated units called segments. The original French use of the name AnnÃ©lides (Lamarck, 1802) comes from the Latin word âanellusâ, meaning a little ring, in reference to the presence of the ring-like segments.