Yes, it lacks a circulatory system. It diffuses oxygen directly into its cells and diffuses carbon dioxide back out. That mechanism is why planarians need to keep their skin m â¦ oist. On land, planarians secrete a thin layer of mucus to make diffusion easier.
Diamond Bar is a city in eastern Los Angeles County, California, United States. The population was 55,544 at the 2010 census, down from 56,287 at the 2000 census. It is named after the diamond over a bar branding iron registered in 1918 by ranch owner Frederick E. Lewis.
For many years the fine fishing on the Diamond City peninsula was known only to the people of the immediate area. In the 1960s, Henry Dietz began to develop the site. The town founded there in 1953 had been called Sugar Loaf, and it became Diamond City in 1966. Surrounded by the lake on three sides and Lead Hill on the fourth, Diamond City is now an uncrowded town of 782 (2010 U.S. Census). The little city on the lake.