1. Urban areas have a bigger population density compared to suburban areas. 2. Urban areas usually include the inner, or main city, whereas suburban areas are those that are just adjacent to the city, or surround the city. 3. Urban areas are more congested in terms of people and establishments compared to suburban territories.
Noun. 1. Parazoa-multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera. subkingdom Parazoa. animal kingdom, Animalia, kingdom Animalia-taxonomic kingdom comprising all living or extinct animals.phylum Porifera, Porifera-coextensive with the subkingdom Parazoa: sponges.oun. 1. Parazoa-multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera. subkingdom Parazoa. animal kingdom, Animalia, kingdom Animalia-taxonomic kingdom comprising all living or extinct animals.
Abstract. The Bryozoa are a phylum of small, colonial, filterâfeeding, almost exclusively sessile, aquatic organisms. Approximately 5600 living species have been described, and the fossil record comprises approximately 20â000 species.Bryozoans are found in all oceans and many freshwater areas.bstract. The Bryozoa are a phylum of small, colonial, filterâfeeding, almost exclusively sessile, aquatic organisms. Approximately 5600 living species have been described, and the fossil record comprises approximately 20â000 species.