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.
An annelid is a segmented worm. An annelid is a type of worm with an oval-like body. They are in the phylum Annelida, which consists of about a thousand different types of wor â¦ ms.This phylum also contains the earthworm. *Note: A phylum is a part of the animal classification: Kingdom, Phylum, Class, Order, Family, Genes, Species.n annelid is a type of worm with an oval-like body. They are in the phylum Annelida, which consists of about a thousand different types of wor â¦ ms. This phylum also contains the earthworm. *Note: A phylum is a part of the animal classification: Kingdom, Phylum, Class, Order, Family, Genes, Species.