The ecosystem of a river is the river viewed as a system operating in its natural environment, and includes biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions. River ecosystems are prime examples of lotic ecosystems.arge rivers have comparatively more species than small streams. Many relate this pattern to the greater area and volume of larger systems, as well as an increase in habitat diversity. Some systems, however, show a poor fit between system size and species richness.
AT&T to Acquire Centennial Communications, Enhance Service for Wireless Customers and Businesses Dallas, Texas, Wall, New Jersey, November 7, 2008 AT&T Inc. (NYSE:T) and Centennial Communications Corp. (Nasdaq:CYCL) today announced that AT&T plans to acquire Centennial, a regional provider of wireless and wired communications services, for $944 million in cash.
The earliest predecessor of CenturyLink was the Oak Ridge Telephone Company in Oak Ridge, Louisiana, which was owned by F. E. Hogan, Sr. In 1930, Hogan sold the company, with 75 paid subscribers, to William Clarke and Marie Williams, for $500. They moved the switchboard to the Williams family front parlor. In 1946, the Williams' son, Clarke McRae Williams, received ownership of the family's telephone company as a wedding gift.